File: htmlarea.js

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// htmlArea v3.0 - Copyright (c) 2003-2005 dynarch.com
//                               2002-2003 interactivetools.com, inc.
// This copyright notice MUST stay intact for use (see license.txt).
//
// A free WYSIWYG editor replacement for <textarea> fields.
// For full source code and docs, visit http://www.interactivetools.com/
//
// Version 3.0 developed by Mihai Bazon.
//   http://dynarch.com/mishoo/
//
// $Id: htmlarea.js,v 1.97 2005/01/29 00:46:51 itools Exp $

if (typeof _editor_url == "string") {
	// Leave exactly one backslash at the end of _editor_url
	_editor_url = _editor_url.replace(/\x2f*$/, '/');
} else {
	alert("WARNING: _editor_url is not set!  You should set this variable to the editor files path; it should preferably be an absolute path, like in '/htmlarea/', but it can be relative if you prefer.  Further we will try to load the editor files correctly but we'll probably fail.");
	_editor_url = '';
}

// make sure we have a language
if (typeof _editor_lang == "string") {
	_editor_lang = _editor_lang.toLowerCase();
} else {
	_editor_lang = "en";
}

// browser identification
HTMLArea.agt = navigator.userAgent.toLowerCase();
HTMLArea.is_ie	   = ((HTMLArea.agt.indexOf("msie") != -1) && (HTMLArea.agt.indexOf("opera") == -1));
HTMLArea.is_opera  = (HTMLArea.agt.indexOf("opera") != -1);
HTMLArea.is_mac	   = (HTMLArea.agt.indexOf("mac") != -1);
HTMLArea.is_mac_ie = (HTMLArea.is_ie && HTMLArea.is_mac);
HTMLArea.is_win_ie = (HTMLArea.is_ie && !HTMLArea.is_mac);
HTMLArea.is_gecko  = (navigator.product == "Gecko");

// Creates a new HTMLArea object.  Tries to replace the textarea with the given
// ID with it.
function HTMLArea(textarea, config) {
        if (!HTMLArea._init_called) {
	 alert("Error: You must called HTMLArea.init() first.  Like this:\n\n" +
	       "HTMLArea.init();\n" +
	       "HTMLArea.onload = function() {\n" +
	       "  var editor = new HTMLArea('editor');\n" +
	       "  editor.generate();\n" +
	       "};\n");
	  return;
	}

	if (HTMLArea.checkSupportedBrowser()) {
		if (typeof config == "undefined") {
			this.config = new HTMLArea.Config();
		} else {
			this.config = config;
		}
		this._htmlArea = null;
		this._textArea = textarea;
		this._editMode = "wysiwyg";
		this.plugins = {};
		this._timerToolbar = null;
		this._timerUndo = null;
		this._undoQueue = new Array(this.config.undoSteps);
		this._undoPos = -1;
		this._customUndo = false;
		this._mdoc = document; // cache the document, we need it in plugins
		this.doctype = '';
	}
};

HTMLArea.onload = function(){};
HTMLArea._scripts = [];
HTMLArea.loadScript = function(url, plugin) {
	if (plugin)
		url = HTMLArea.getPluginDir(plugin) + '/' + url;
	this._scripts.push(url);
};

HTMLArea.init = function() {
	var head = document.getElementsByTagName("head")[0];
	var current = 0;
	var savetitle = document.title;
	var evt = HTMLArea.is_ie ? "onreadystatechange" : "onload";
	function loadNextScript() {
		if (current > 0 && HTMLArea.is_ie &&
		    !/loaded|complete/.test(window.event.srcElement.readyState))
			return;
		if (current < HTMLArea._scripts.length) {
			var url = HTMLArea._scripts[current++];
			document.title = "[HTMLArea: loading script " + current + "/" + HTMLArea._scripts.length + "]";
			var script = document.createElement("script");
			script.type = "text/javascript";
			script.src = url;
			script[evt] = loadNextScript;
			head.appendChild(script);
		} else {
			document.title = savetitle;
                        HTMLArea._init_called = 1;
			HTMLArea.onload();
		}
	};
	loadNextScript();

};

HTMLArea.loadScript(_editor_url + "dialog.js");
HTMLArea.loadScript(_editor_url + "popupwin.js");
HTMLArea.loadScript(_editor_url + "lang/" + _editor_lang + ".js");

// cache some regexps
HTMLArea.RE_tagName = /(<\/|<)\s*([^ \t\n>]+)/ig;
HTMLArea.RE_doctype = /(<!doctype((.|\n)*?)>)\n?/i;
HTMLArea.RE_head    = /<head>((.|\n)*?)<\/head>/i;
HTMLArea.RE_body    = /<body>((.|\n)*?)<\/body>/i;

HTMLArea.Config = function () {
	this.version = "3.0";

	this.width = "auto";
	this.height = "auto";

	// enable creation of a status bar?
	this.statusBar = true;

	// intercept ^V and use the HTMLArea paste command
	// If false, then passes ^V through to browser editor widget
	this.htmlareaPaste = false;

	// maximum size of the undo queue
	this.undoSteps = 20;

	// the time interval at which undo samples are taken
	this.undoTimeout = 500;	// 1/2 sec.

	// the next parameter specifies whether the toolbar should be included
	// in the size or not.
	this.sizeIncludesToolbar = true;

	// if true then HTMLArea will retrieve the full HTML, starting with the
	// <HTML> tag.
	this.fullPage = false;

	// style included in the iframe document
	this.pageStyle = "";

	// set to true if you want Word code to be cleaned upon Paste
	this.killWordOnPaste = true;

	// enable the 'Target' field in the Make Link dialog
	this.makeLinkShowsTarget = true;

	// BaseURL included in the iframe document
	this.baseURL = document.baseURI || document.URL;
	if (this.baseURL && this.baseURL.match(/(.*)\/([^\/]+)/))
		this.baseURL = RegExp.$1 + "/";

	// URL-s
	this.imgURL = "images/";
	this.popupURL = "popups/";

	// remove tags (these have to be a regexp, or null if this functionality is not desired)
	this.htmlRemoveTags = null;

	/** CUSTOMIZING THE TOOLBAR
	 * -------------------------
	 *
	 * It is recommended that you customize the toolbar contents in an
	 * external file (i.e. the one calling HTMLArea) and leave this one
	 * unchanged.  That's because when we (InteractiveTools.com) release a
	 * new official version, it's less likely that you will have problems
	 * upgrading HTMLArea.
	 */
	this.toolbar = [
		[ "fontname", "space",
		  "fontsize", "space",
		  "formatblock", "space",
		  "bold", "italic", "underline", "strikethrough", "separator",
		  "subscript", "superscript", "separator",
		  "copy", "cut", "paste", "space", "undo", "redo", "space", "removeformat", "killword" ],

		[ "justifyleft", "justifycenter", "justifyright", "justifyfull", "separator",
		  "lefttoright", "righttoleft", "separator",
		  "orderedlist", "unorderedlist", "outdent", "indent", "separator",
		  "forecolor", "hilitecolor", "separator",
		  "inserthorizontalrule", "createlink", "insertimage", "inserttable", "htmlmode", "separator",
		  "popupeditor", "separator", "showhelp", "about" ]
	];

	this.fontname = {
		"&mdash; font &mdash;":         '',
		"Arial":	   'arial,helvetica,sans-serif',
		"Courier New":	   'courier new,courier,monospace',
		"Georgia":	   'georgia,times new roman,times,serif',
		"Tahoma":	   'tahoma,arial,helvetica,sans-serif',
		"Times New Roman": 'times new roman,times,serif',
		"Verdana":	   'verdana,arial,helvetica,sans-serif',
		"impact":	   'impact',
		"WingDings":	   'wingdings'
	};

	this.fontsize = {
		"&mdash; size &mdash;"  : "",
		"1 (8 pt)" : "1",
		"2 (10 pt)": "2",
		"3 (12 pt)": "3",
		"4 (14 pt)": "4",
		"5 (18 pt)": "5",
		"6 (24 pt)": "6",
		"7 (36 pt)": "7"
	};

	this.formatblock = {
		"&mdash; format &mdash;"  : "",
		"Heading 1": "h1",
		"Heading 2": "h2",
		"Heading 3": "h3",
		"Heading 4": "h4",
		"Heading 5": "h5",
		"Heading 6": "h6",
		"Normal"   : "p",
		"Address"  : "address",
		"Formatted": "pre"
	};

	this.customSelects = {};

	function cut_copy_paste(e, cmd, obj) {
		e.execCommand(cmd);
	};

	this.debug = true;

	// ADDING CUSTOM BUTTONS: please read below!
	// format of the btnList elements is "ID: [ ToolTip, Icon, Enabled in text mode?, ACTION ]"
	//    - ID: unique ID for the button.  If the button calls document.execCommand
	//	    it's wise to give it the same name as the called command.
	//    - ACTION: function that gets called when the button is clicked.
	//              it has the following prototype:
	//                 function(editor, buttonName)
	//              - editor is the HTMLArea object that triggered the call
	//              - buttonName is the ID of the clicked button
	//              These 2 parameters makes it possible for you to use the same
	//              handler for more HTMLArea objects or for more different buttons.
	//    - ToolTip: default tooltip, for cases when it is not defined in the -lang- file (HTMLArea.I18N)
	//    - Icon: path to an icon image file for the button (TODO: use one image for all buttons!)
	//    - Enabled in text mode: if false the button gets disabled for text-only mode; otherwise enabled all the time.
	this.btnList = {
		bold: [ "Bold", "ed_format_bold.gif", false, function(e) {e.execCommand("bold");} ],
		italic: [ "Italic", "ed_format_italic.gif", false, function(e) {e.execCommand("italic");} ],
		underline: [ "Underline", "ed_format_underline.gif", false, function(e) {e.execCommand("underline");} ],
		strikethrough: [ "Strikethrough", "ed_format_strike.gif", false, function(e) {e.execCommand("strikethrough");} ],
		subscript: [ "Subscript", "ed_format_sub.gif", false, function(e) {e.execCommand("subscript");} ],
		superscript: [ "Superscript", "ed_format_sup.gif", false, function(e) {e.execCommand("superscript");} ],
		justifyleft: [ "Justify Left", "ed_align_left.gif", false, function(e) {e.execCommand("justifyleft");} ],
		justifycenter: [ "Justify Center", "ed_align_center.gif", false, function(e) {e.execCommand("justifycenter");} ],
		justifyright: [ "Justify Right", "ed_align_right.gif", false, function(e) {e.execCommand("justifyright");} ],
		justifyfull: [ "Justify Full", "ed_align_justify.gif", false, function(e) {e.execCommand("justifyfull");} ],
		orderedlist: [ "Ordered List", "ed_list_num.gif", false, function(e) {e.execCommand("insertorderedlist");} ],
		unorderedlist: [ "Bulleted List", "ed_list_bullet.gif", false, function(e) {e.execCommand("insertunorderedlist");} ],
		outdent: [ "Decrease Indent", "ed_indent_less.gif", false, function(e) {e.execCommand("outdent");} ],
		indent: [ "Increase Indent", "ed_indent_more.gif", false, function(e) {e.execCommand("indent");} ],
		forecolor: [ "Font Color", "ed_color_fg.gif", false, function(e) {e.execCommand("forecolor");} ],
		hilitecolor: [ "Background Color", "ed_color_bg.gif", false, function(e) {e.execCommand("hilitecolor");} ],
		inserthorizontalrule: [ "Horizontal Rule", "ed_hr.gif", false, function(e) {e.execCommand("inserthorizontalrule");} ],
		createlink: [ "Insert Web Link", "ed_link.gif", false, function(e) {e.execCommand("createlink", true);} ],
		insertimage: [ "Insert/Modify Image", "ed_image.gif", false, function(e) {e.execCommand("insertimage");} ],
		inserttable: [ "Insert Table", "insert_table.gif", false, function(e) {e.execCommand("inserttable");} ],
		htmlmode: [ "Toggle HTML Source", "ed_html.gif", true, function(e) {e.execCommand("htmlmode");} ],
		popupeditor: [ "Enlarge Editor", "fullscreen_maximize.gif", true, function(e) {e.execCommand("popupeditor");} ],
		about: [ "About this editor", "ed_about.gif", true, function(e) {e.execCommand("about");} ],
		showhelp: [ "Help using editor", "ed_help.gif", true, function(e) {e.execCommand("showhelp");} ],
		undo: [ "Undoes your last action", "ed_undo.gif", false, function(e) {e.execCommand("undo");} ],
		redo: [ "Redoes your last action", "ed_redo.gif", false, function(e) {e.execCommand("redo");} ],
		cut: [ "Cut selection", "ed_cut.gif", false, cut_copy_paste ],
		copy: [ "Copy selection", "ed_copy.gif", false, cut_copy_paste ],
		paste: [ "Paste from clipboard", "ed_paste.gif", false, cut_copy_paste ],
		lefttoright: [ "Direction left to right", "ed_left_to_right.gif", false, function(e) {e.execCommand("lefttoright");} ],
		righttoleft: [ "Direction right to left", "ed_right_to_left.gif", false, function(e) {e.execCommand("righttoleft");} ],
		removeformat: [ "Remove formatting", "ed_rmformat.gif", false, function(e) {e.execCommand("removeformat");} ],
		print: [ "Print document", "ed_print.gif", false, function(e) {e._iframe.contentWindow.print();} ],
		killword: [ "Clear MSOffice tags", "ed_killword.gif", false, function(e) {e.execCommand("killword");} ]
	};
	/* ADDING CUSTOM BUTTONS
	 * ---------------------
	 *
	 * It is recommended that you add the custom buttons in an external
	 * file and leave this one unchanged.  That's because when we
	 * (InteractiveTools.com) release a new official version, it's less
	 * likely that you will have problems upgrading HTMLArea.
	 *
	 * Example on how to add a custom button when you construct the HTMLArea:
	 *
	 *   var editor = new HTMLArea("your_text_area_id");
	 *   var cfg = editor.config; // this is the default configuration
	 *   cfg.btnList["my-hilite"] =
	 *	[ function(editor) { editor.surroundHTML('<span style="background:yellow">', '</span>'); }, // action
	 *	  "Highlight selection", // tooltip
	 *	  "my_hilite.gif", // image
	 *	  false // disabled in text mode
	 *	];
	 *   cfg.toolbar.push(["linebreak", "my-hilite"]); // add the new button to the toolbar
	 *
	 * An alternate (also more convenient and recommended) way to
	 * accomplish this is to use the registerButton function below.
	 */
	// initialize tooltips from the I18N module and generate correct image path
	for (var i in this.btnList) {
		var btn = this.btnList[i];
		btn[1] = _editor_url + this.imgURL + btn[1];
		if (typeof HTMLArea.I18N.tooltips[i] != "undefined") {
			btn[0] = HTMLArea.I18N.tooltips[i];
		}
	}
};

/** Helper function: register a new button with the configuration.  It can be
 * called with all 5 arguments, or with only one (first one).  When called with
 * only one argument it must be an object with the following properties: id,
 * tooltip, image, textMode, action.  Examples:
 *
 * 1. config.registerButton("my-hilite", "Hilite text", "my-hilite.gif", false, function(editor) {...});
 * 2. config.registerButton({
 *      id       : "my-hilite",      // the ID of your button
 *      tooltip  : "Hilite text",    // the tooltip
 *      image    : "my-hilite.gif",  // image to be displayed in the toolbar
 *      textMode : false,            // disabled in text mode
 *      action   : function(editor) { // called when the button is clicked
 *                   editor.surroundHTML('<span class="hilite">', '</span>');
 *                 },
 *      context  : "p"               // will be disabled if outside a <p> element
 *    });
 */
HTMLArea.Config.prototype.registerButton = function(id, tooltip, image, textMode, action, context) {
	var the_id;
	if (typeof id == "string") {
		the_id = id;
	} else if (typeof id == "object") {
		the_id = id.id;
	} else {
		alert("ERROR [HTMLArea.Config::registerButton]:\ninvalid arguments");
		return false;
	}
	// check for existing id
	if (typeof this.customSelects[the_id] != "undefined") {
		// alert("WARNING [HTMLArea.Config::registerDropdown]:\nA dropdown with the same ID already exists.");
	}
	if (typeof this.btnList[the_id] != "undefined") {
		// alert("WARNING [HTMLArea.Config::registerDropdown]:\nA button with the same ID already exists.");
	}
	switch (typeof id) {
	    case "string": this.btnList[id] = [ tooltip, image, textMode, action, context ]; break;
	    case "object": this.btnList[id.id] = [ id.tooltip, id.image, id.textMode, id.action, id.context ]; break;
	}
};

/** The following helper function registers a dropdown box with the editor
 * configuration.  You still have to add it to the toolbar, same as with the
 * buttons.  Call it like this:
 *
 * FIXME: add example
 */
HTMLArea.Config.prototype.registerDropdown = function(object) {
	// check for existing id
	if (typeof this.customSelects[object.id] != "undefined") {
		// alert("WARNING [HTMLArea.Config::registerDropdown]:\nA dropdown with the same ID already exists.");
	}
	if (typeof this.btnList[object.id] != "undefined") {
		// alert("WARNING [HTMLArea.Config::registerDropdown]:\nA button with the same ID already exists.");
	}
	this.customSelects[object.id] = object;
};

/** Call this function to remove some buttons/drop-down boxes from the toolbar.
 * Pass as the only parameter a string containing button/drop-down names
 * delimited by spaces.  Note that the string should also begin with a space
 * and end with a space.  Example:
 *
 *   config.hideSomeButtons(" fontname fontsize textindicator ");
 *
 * It's useful because it's easier to remove stuff from the defaul toolbar than
 * create a brand new toolbar ;-)
 */
HTMLArea.Config.prototype.hideSomeButtons = function(remove) {
	var toolbar = this.toolbar;
	for (var i = toolbar.length; --i >= 0;) {
		var line = toolbar[i];
		for (var j = line.length; --j >= 0; ) {
			if (remove.indexOf(" " + line[j] + " ") >= 0) {
				var len = 1;
				if (/separator|space/.test(line[j + 1])) {
					len = 2;
				}
				line.splice(j, len);
			}
		}
	}
};

/** Helper function: replace all TEXTAREA-s in the document with HTMLArea-s. */
HTMLArea.replaceAll = function(config) {
	var tas = document.getElementsByTagName("textarea");
	for (var i = tas.length; i > 0; (new HTMLArea(tas[--i], config)).generate());
};

/** Helper function: replaces the TEXTAREA with the given ID with HTMLArea. */
HTMLArea.replace = function(id, config) {
	var ta = HTMLArea.getElementById("textarea", id);
	return ta ? (new HTMLArea(ta, config)).generate() : null;
};

// Creates the toolbar and appends it to the _htmlarea
HTMLArea.prototype._createToolbar = function () {
	var editor = this;	// to access this in nested functions

	var toolbar = document.createElement("div");
	this._toolbar = toolbar;
	toolbar.className = "toolbar";
	toolbar.unselectable = "1";
	var tb_row = null;
	var tb_objects = new Object();
	this._toolbarObjects = tb_objects;

	// creates a new line in the toolbar
	function newLine() {
		var table = document.createElement("table");
		table.border = "0px";
		table.cellSpacing = "0px";
		table.cellPadding = "0px";
		toolbar.appendChild(table);
		// TBODY is required for IE, otherwise you don't see anything
		// in the TABLE.
		var tb_body = document.createElement("tbody");
		table.appendChild(tb_body);
		tb_row = document.createElement("tr");
		tb_body.appendChild(tb_row);
	}; // END of function: newLine
	// init first line
	newLine();

	// updates the state of a toolbar element.  This function is member of
	// a toolbar element object (unnamed objects created by createButton or
	// createSelect functions below).
	function setButtonStatus(id, newval) {
		var oldval = this[id];
		var el = this.element;
		if (oldval != newval) {
			switch (id) {
			    case "enabled":
				if (newval) {
					HTMLArea._removeClass(el, "buttonDisabled");
					el.disabled = false;
				} else {
					HTMLArea._addClass(el, "buttonDisabled");
					el.disabled = true;
				}
				break;
			    case "active":
				if (newval) {
					HTMLArea._addClass(el, "buttonPressed");
				} else {
					HTMLArea._removeClass(el, "buttonPressed");
				}
				break;
			}
			this[id] = newval;
		}
	}; // END of function: setButtonStatus

	// this function will handle creation of combo boxes.  Receives as
	// parameter the name of a button as defined in the toolBar config.
	// This function is called from createButton, above, if the given "txt"
	// doesn't match a button.
	function createSelect(txt) {
		var options = null;
		var el = null;
		var cmd = null;
		var customSelects = editor.config.customSelects;
		var context = null;
		var tooltip = "";
		switch (txt) {
		    case "fontsize":
		    case "fontname":
		    case "formatblock":
			// the following line retrieves the correct
			// configuration option because the variable name
			// inside the Config object is named the same as the
			// button/select in the toolbar.  For instance, if txt
			// == "formatblock" we retrieve config.formatblock (or
			// a different way to write it in JS is
			// config["formatblock"].
			options = editor.config[txt];
			cmd = txt;
			break;
		    default:
			// try to fetch it from the list of registered selects
			cmd = txt;
			var dropdown = customSelects[cmd];
			if (typeof dropdown != "undefined") {
				options = dropdown.options;
				context = dropdown.context;
				if (typeof dropdown.tooltip != "undefined") {
					tooltip = dropdown.tooltip;
				}
			} else {
				alert("ERROR [createSelect]:\nCan't find the requested dropdown definition");
			}
			break;
		}
		if (options) {
			el = document.createElement("select");
			el.title = tooltip;
			var obj = {
				name	: txt, // field name
				element : el,	// the UI element (SELECT)
				enabled : true, // is it enabled?
				text	: false, // enabled in text mode?
				cmd	: cmd, // command ID
				state	: setButtonStatus, // for changing state
				context : context
			};
			tb_objects[txt] = obj;
			for (var i in options) {
				var op = document.createElement("option");
				op.innerHTML = i;
				op.value = options[i];
				el.appendChild(op);
			}
			HTMLArea._addEvent(el, "change", function () {
				editor._comboSelected(el, txt);
			});
		}
		return el;
	}; // END of function: createSelect

	// appends a new button to toolbar
	function createButton(txt) {
		// the element that will be created
		var el = null;
		var btn = null;
		switch (txt) {
		    case "separator":
			el = document.createElement("div");
			el.className = "separator";
			break;
		    case "space":
			el = document.createElement("div");
			el.className = "space";
			break;
		    case "linebreak":
			newLine();
			return false;
		    case "textindicator":
			el = document.createElement("div");
			el.appendChild(document.createTextNode("A"));
			el.className = "indicator";
			el.title = HTMLArea.I18N.tooltips.textindicator;
			var obj = {
				name	: txt, // the button name (i.e. 'bold')
				element : el, // the UI element (DIV)
				enabled : true, // is it enabled?
				active	: false, // is it pressed?
				text	: false, // enabled in text mode?
				cmd	: "textindicator", // the command ID
				state	: setButtonStatus // for changing state
			};
			tb_objects[txt] = obj;
			break;
		    default:
			btn = editor.config.btnList[txt];
		}
		if (!el && btn) {
			el = document.createElement("div");
			el.title = btn[0];
			el.className = "button";
			// let's just pretend we have a button object, and
			// assign all the needed information to it.
			var obj = {
				name	: txt, // the button name (i.e. 'bold')
				element : el, // the UI element (DIV)
				enabled : true, // is it enabled?
				active	: false, // is it pressed?
				text	: btn[2], // enabled in text mode?
				cmd	: btn[3], // the command ID
				state	: setButtonStatus, // for changing state
				context : btn[4] || null // enabled in a certain context?
			};
			tb_objects[txt] = obj;
			// handlers to emulate nice flat toolbar buttons
			HTMLArea._addEvent(el, "mouseover", function () {
				if (obj.enabled) {
					HTMLArea._addClass(el, "buttonHover");
				}
			});
			HTMLArea._addEvent(el, "mouseout", function () {
				if (obj.enabled) with (HTMLArea) {
					_removeClass(el, "buttonHover");
					_removeClass(el, "buttonActive");
					(obj.active) && _addClass(el, "buttonPressed");
				}
			});
			HTMLArea._addEvent(el, "mousedown", function (ev) {
				if (obj.enabled) with (HTMLArea) {
					_addClass(el, "buttonActive");
					_removeClass(el, "buttonPressed");
					_stopEvent(is_ie ? window.event : ev);
				}
			});
			// when clicked, do the following:
			HTMLArea._addEvent(el, "click", function (ev) {
				if (obj.enabled) with (HTMLArea) {
					_removeClass(el, "buttonActive");
					_removeClass(el, "buttonHover");
					obj.cmd(editor, obj.name, obj);
					_stopEvent(is_ie ? window.event : ev);
				}
			});
			var img = document.createElement("img");
			img.src = btn[1];
			img.style.width = "18px";
			img.style.height = "18px";
			el.appendChild(img);
		} else if (!el) {
			el = createSelect(txt);
		}
		if (el) {
			var tb_cell = document.createElement("td");
			tb_row.appendChild(tb_cell);
			tb_cell.appendChild(el);
		} else {
			alert("FIXME: Unknown toolbar item: " + txt);
		}
		return el;
	};

	var first = true;
	for (var i = 0; i < this.config.toolbar.length; ++i) {
		if (!first) {
			createButton("linebreak");
		} else {
			first = false;
		}
		var group = this.config.toolbar[i];
		for (var j = 0; j < group.length; ++j) {
			var code = group[j];
			if (/^([IT])\[(.*?)\]/.test(code)) {
				// special case, create text label
				var l7ed = RegExp.$1 == "I"; // localized?
				var label = RegExp.$2;
				if (l7ed) {
					label = HTMLArea.I18N.custom[label];
				}
				var tb_cell = document.createElement("td");
				tb_row.appendChild(tb_cell);
				tb_cell.className = "label";
				tb_cell.innerHTML = label;
			} else {
				createButton(code);
			}
		}
	}

	this._htmlArea.appendChild(toolbar);
};

HTMLArea.prototype._createStatusBar = function() {
	var statusbar = document.createElement("div");
	statusbar.className = "statusBar";
	this._htmlArea.appendChild(statusbar);
	this._statusBar = statusbar;
	// statusbar.appendChild(document.createTextNode(HTMLArea.I18N.msg["Path"] + ": "));
	// creates a holder for the path view
	div = document.createElement("span");
	div.className = "statusBarTree";
	div.innerHTML = HTMLArea.I18N.msg["Path"] + ": ";
	this._statusBarTree = div;
	this._statusBar.appendChild(div);
	if (!this.config.statusBar) {
		// disable it...
		statusbar.style.display = "none";
	}
};

// Creates the HTMLArea object and replaces the textarea with it.
HTMLArea.prototype.generate = function () {
	var editor = this;	// we'll need "this" in some nested functions
	// get the textarea
	var textarea = this._textArea;
	if (typeof textarea == "string") {
		// it's not element but ID
		this._textArea = textarea = HTMLArea.getElementById("textarea", textarea);
	}
	this._ta_size = {
		w: textarea.offsetWidth,
		h: textarea.offsetHeight
	};
	textarea.style.display = "none";

	// create the editor framework
	var htmlarea = document.createElement("div");
	htmlarea.className = "htmlarea";
	this._htmlArea = htmlarea;

	// insert the editor before the textarea.
	textarea.parentNode.insertBefore(htmlarea, textarea);

	if (textarea.form) {
		// we have a form, on submit get the HTMLArea content and
		// update original textarea.
		var f = textarea.form;
		if (typeof f.onsubmit == "function") {
			var funcref = f.onsubmit;
			if (typeof f.__msh_prevOnSubmit == "undefined") {
				f.__msh_prevOnSubmit = [];
			}
			f.__msh_prevOnSubmit.push(funcref);
		}
		f.onsubmit = function() {
			editor._textArea.value = editor.getHTML();
			var a = this.__msh_prevOnSubmit;
			// call previous submit methods if they were there.
			if (typeof a != "undefined") {
				for (var i = a.length; --i >= 0;) {
					a[i]();
				}
			}
		};
		if (typeof f.onreset == "function") {
			var funcref = f.onreset;
			if (typeof f.__msh_prevOnReset == "undefined") {
				f.__msh_prevOnReset = [];
			}
			f.__msh_prevOnReset.push(funcref);
		}
		f.onreset = function() {
			editor.setHTML(editor._textArea.value);
			editor.updateToolbar();
			var a = this.__msh_prevOnReset;
			// call previous reset methods if they were there.
			if (typeof a != "undefined") {
				for (var i = a.length; --i >= 0;) {
					a[i]();
				}
			}
		};
	}

	// add a handler for the "back/forward" case -- on body.unload we save
	// the HTML content into the original textarea.
	try {
		window.onunload = function() {
			editor._textArea.value = editor.getHTML();
		};
	} catch(e) {};

	// creates & appends the toolbar
	this._createToolbar();

	// create the IFRAME
	var iframe = document.createElement("iframe");

	// workaround for the HTTPS problem
	// iframe.setAttribute("src", "javascript:void(0);");
	iframe.src = _editor_url + "popups/blank.html";

	htmlarea.appendChild(iframe);

	this._iframe = iframe;

	// creates & appends the status bar, if the case
	this._createStatusBar();

	// remove the default border as it keeps us from computing correctly
	// the sizes.  (somebody tell me why doesn't this work in IE)

	if (!HTMLArea.is_ie) {
		iframe.style.borderWidth = "1px";
	// iframe.frameBorder = "1";
	// iframe.marginHeight = "0";
	// iframe.marginWidth = "0";
	}

	// size the IFRAME according to user's prefs or initial textarea
	var height = (this.config.height == "auto" ? (this._ta_size.h + "px") : this.config.height);
	height = parseInt(height);
	var width = (this.config.width == "auto" ? (this._ta_size.w + "px") : this.config.width);
	width = parseInt(width);

	if (!HTMLArea.is_ie) {
		height -= 2;
		width -= 2;
	}

	iframe.style.width = width + "px";
	if (this.config.sizeIncludesToolbar) {
		// substract toolbar height
		height -= this._toolbar.offsetHeight;
		height -= this._statusBar.offsetHeight;
	}
	if (height < 0) {
		height = 0;
	}
	iframe.style.height = height + "px";

	// the editor including the toolbar now have the same size as the
	// original textarea.. which means that we need to reduce that a bit.
	textarea.style.width = iframe.style.width;
 	textarea.style.height = iframe.style.height;

	// IMPORTANT: we have to allow Mozilla a short time to recognize the
	// new frame.  Otherwise we get a stupid exception.
	function initIframe() {
		var doc = editor._iframe.contentWindow.document;
		if (!doc) {
			// Try again..
			// FIXME: don't know what else to do here.  Normally
			// we'll never reach this point.
			if (HTMLArea.is_gecko) {
				setTimeout(initIframe, 100);
				return false;
			} else {
				alert("ERROR: IFRAME can't be initialized.");
			}
		}
		if (HTMLArea.is_gecko) {
			// enable editable mode for Mozilla
			doc.designMode = "on";
		}
		editor._doc = doc;
		if (!editor.config.fullPage) {
			doc.open();
			var html = "<html>\n";
			html += "<head>\n";
			if (editor.config.baseURL)
				html += '<base href="' + editor.config.baseURL + '" />';
			html += "<style>" + editor.config.pageStyle +
				" html,body { border: 0px; }</style>\n";
			html += "</head>\n";
			html += "<body>\n";
			html += editor._textArea.value;
			html += "</body>\n";
			html += "</html>";
			doc.write(html);
			doc.close();
		} else {
			var html = editor._textArea.value;
			if (html.match(HTMLArea.RE_doctype)) {
				editor.setDoctype(RegExp.$1);
				html = html.replace(HTMLArea.RE_doctype, "");
			}
			doc.open();
			doc.write(html);
			doc.close();
		}

		if (HTMLArea.is_ie) {
			// enable editable mode for IE.	 For some reason this
			// doesn't work if done in the same place as for Gecko
			// (above).
			doc.body.contentEditable = true;
		}

		editor.focusEditor();
		// intercept some events; for updating the toolbar & keyboard handlers
		HTMLArea._addEvents
			(doc, ["keydown", "keypress", "mousedown", "mouseup", "drag"],
			 function (event) {
				 return editor._editorEvent(HTMLArea.is_ie ? editor._iframe.contentWindow.event : event);
			 });

		// check if any plugins have registered refresh handlers
		for (var i in editor.plugins) {
			var plugin = editor.plugins[i].instance;
			if (typeof plugin.onGenerate == "function")
				plugin.onGenerate();
			if (typeof plugin.onGenerateOnce == "function") {
				plugin.onGenerateOnce();
				plugin.onGenerateOnce = null;
			}
		}

		setTimeout(function() {
			editor.updateToolbar();
		}, 250);

		if (typeof editor.onGenerate == "function")
			editor.onGenerate();
	};
	setTimeout(initIframe, 100);
	return this;
};

// Switches editor mode; parameter can be "textmode" or "wysiwyg".  If no
// parameter was passed this function toggles between modes.
HTMLArea.prototype.setMode = function(mode) {
	if (typeof mode == "undefined") {
		mode = ((this._editMode == "textmode") ? "wysiwyg" : "textmode");
	}
	switch (mode) {
	    case "textmode":
		this._textArea.value = this.getHTML();
		this._iframe.style.display = "none";
		this._textArea.style.display = "block";
		if (this.config.statusBar) {
			this._statusBar.innerHTML = HTMLArea.I18N.msg["TEXT_MODE"];
		}
		break;
	    case "wysiwyg":
		if (HTMLArea.is_gecko) {
			// disable design mode before changing innerHTML
			try {
				this._doc.designMode = "off";
			} catch(e) {};
		}
		if (!this.config.fullPage)
			this._doc.body.innerHTML = this.getHTML();
		else
			this.setFullHTML(this.getHTML());
		this._iframe.style.display = "block";
		this._textArea.style.display = "none";
		if (HTMLArea.is_gecko) {
			// we need to refresh that info for Moz-1.3a
			try {
				this._doc.designMode = "on";
			} catch(e) {};
		}
		if (this.config.statusBar) {
			this._statusBar.innerHTML = '';
			// this._statusBar.appendChild(document.createTextNode(HTMLArea.I18N.msg["Path"] + ": "));
			this._statusBar.appendChild(this._statusBarTree);
		}
		break;
	    default:
		alert("Mode <" + mode + "> not defined!");
		return false;
	}
	this._editMode = mode;
	this.focusEditor();

	for (var i in this.plugins) {
		var plugin = this.plugins[i].instance;
		if (typeof plugin.onMode == "function") plugin.onMode(mode);
	}
};

HTMLArea.prototype.setFullHTML = function(html) {
	var save_multiline = RegExp.multiline;
	RegExp.multiline = true;
	if (html.match(HTMLArea.RE_doctype)) {
		this.setDoctype(RegExp.$1);
		html = html.replace(HTMLArea.RE_doctype, "");
	}
	RegExp.multiline = save_multiline;
	if (!HTMLArea.is_ie) {
		if (html.match(HTMLArea.RE_head))
			this._doc.getElementsByTagName("head")[0].innerHTML = RegExp.$1;
		if (html.match(HTMLArea.RE_body))
			this._doc.getElementsByTagName("body")[0].innerHTML = RegExp.$1;
	} else {
		var html_re = /<html>((.|\n)*?)<\/html>/i;
		html = html.replace(html_re, "$1");
		this._doc.open();
		this._doc.write(html);
		this._doc.close();
		this._doc.body.contentEditable = true;
		return true;
	}
};

/***************************************************
 *  Category: PLUGINS
 ***************************************************/

// Create the specified plugin and register it with this HTMLArea
HTMLArea.prototype.registerPlugin = function() {
	var plugin = arguments[0];
	var args = [];
	for (var i = 1; i < arguments.length; ++i)
		args.push(arguments[i]);
	this.registerPlugin2(plugin, args);
};

// this is the variant of the function above where the plugin arguments are
// already packed in an array.  Externally, it should be only used in the
// full-screen editor code, in order to initialize plugins with the same
// parameters as in the opener window.
HTMLArea.prototype.registerPlugin2 = function(plugin, args) {
	if (typeof plugin == "string")
		plugin = eval(plugin);
	if (typeof plugin == "undefined") {
		/* FIXME: This should never happen. But why does it do? */
		return false;
	}
	var obj = new plugin(this, args);
	if (obj) {
		var clone = {};
		var info = plugin._pluginInfo;
		for (var i in info)
			clone[i] = info[i];
		clone.instance = obj;
		clone.args = args;
		this.plugins[plugin._pluginInfo.name] = clone;
	} else
		alert("Can't register plugin " + plugin.toString() + ".");
};

// static function that loads the required plugin and lang file, based on the
// language loaded already for HTMLArea.  You better make sure that the plugin
// _has_ that language, otherwise shit might happen ;-)
HTMLArea.getPluginDir = function(pluginName) {
	return _editor_url + "plugins/" + pluginName;
};

HTMLArea.loadPlugin = function(pluginName) {
	var dir = this.getPluginDir(pluginName);
	var plugin = pluginName.replace(/([a-z])([A-Z])([a-z])/g,
					function (str, l1, l2, l3) {
						return l1 + "-" + l2.toLowerCase() + l3;
					}).toLowerCase() + ".js";
	var plugin_file = dir + "/" + plugin;
	var plugin_lang = dir + "/lang/" + _editor_lang + ".js";
	//document.write("<script type='text/javascript' src='" + plugin_file + "'></script>");
	//document.write("<script type='text/javascript' src='" + plugin_lang + "'></script>");
	this.loadScript(plugin_file);
	this.loadScript(plugin_lang);
};

HTMLArea.loadStyle = function(style, plugin) {
	var url = _editor_url || '';
	if (typeof plugin != "undefined") {
		url += "plugins/" + plugin + "/";
	}
	url += style;
	if (/^\//.test(style))
		url = style;
	var head = document.getElementsByTagName("head")[0];
	var link = document.createElement("link");
	link.rel = "stylesheet";
	link.href = url;
	head.appendChild(link);
	//document.write("<style type='text/css'>@import url(" + url + ");</style>");
};
HTMLArea.loadStyle(typeof _editor_css == "string" ? _editor_css : "htmlarea.css");

/***************************************************
 *  Category: EDITOR UTILITIES
 ***************************************************/

HTMLArea.prototype.debugTree = function() {
	var ta = document.createElement("textarea");
	ta.style.width = "100%";
	ta.style.height = "20em";
	ta.value = "";
	function debug(indent, str) {
		for (; --indent >= 0;)
			ta.value += " ";
		ta.value += str + "\n";
	};
	function _dt(root, level) {
		var tag = root.tagName.toLowerCase(), i;
		var ns = HTMLArea.is_ie ? root.scopeName : root.prefix;
		debug(level, "- " + tag + " [" + ns + "]");
		for (i = root.firstChild; i; i = i.nextSibling)
			if (i.nodeType == 1)
				_dt(i, level + 2);
	};
	_dt(this._doc.body, 0);
	document.body.appendChild(ta);
};

HTMLArea.getInnerText = function(el) {
	var txt = '', i;
	for (i = el.firstChild; i; i = i.nextSibling) {
		if (i.nodeType == 3)
			txt += i.data;
		else if (i.nodeType == 1)
			txt += HTMLArea.getInnerText(i);
	}
	return txt;
};

HTMLArea.prototype._wordClean = function() {
	var
		editor = this,
		stats = {
			empty_tags : 0,
			mso_class  : 0,
			mso_style  : 0,
			mso_xmlel  : 0,
			orig_len   : this._doc.body.innerHTML.length,
			T          : (new Date()).getTime()
		},
		stats_txt = {
			empty_tags : "Empty tags removed: ",
			mso_class  : "MSO class names removed: ",
			mso_style  : "MSO inline style removed: ",
			mso_xmlel  : "MSO XML elements stripped: "
		};
	function showStats() {
		var txt = "HTMLArea word cleaner stats: \n\n";
		for (var i in stats)
			if (stats_txt[i])
				txt += stats_txt[i] + stats[i] + "\n";
		txt += "\nInitial document length: " + stats.orig_len + "\n";
		txt += "Final document length: " + editor._doc.body.innerHTML.length + "\n";
		txt += "Clean-up took " + (((new Date()).getTime() - stats.T) / 1000) + " seconds";
		alert(txt);
	};
	function clearClass(node) {
		var newc = node.className.replace(/(^|\s)mso.*?(\s|$)/ig, ' ');
		if (newc != node.className) {
			node.className = newc;
			if (!/\S/.test(node.className)) {
				node.removeAttribute("className");
				++stats.mso_class;
			}
		}
	};
	function clearStyle(node) {
 		var declarations = node.style.cssText.split(/\s*;\s*/);
		for (var i = declarations.length; --i >= 0;)
			if (/^mso|^tab-stops/i.test(declarations[i]) ||
			    /^margin\s*:\s*0..\s+0..\s+0../i.test(declarations[i])) {
				++stats.mso_style;
				declarations.splice(i, 1);
			}
		node.style.cssText = declarations.join("; ");
	};
	function stripTag(el) {
		if (HTMLArea.is_ie)
			el.outerHTML = HTMLArea.htmlEncode(el.innerText);
		else {
			var txt = document.createTextNode(HTMLArea.getInnerText(el));
			el.parentNode.insertBefore(txt, el);
			el.parentNode.removeChild(el);
		}
		++stats.mso_xmlel;
	};
	function checkEmpty(el) {
		if (/^(a|span|b|strong|i|em|font)$/i.test(el.tagName) &&
		    !el.firstChild) {
			el.parentNode.removeChild(el);
			++stats.empty_tags;
		}
	};
	function parseTree(root) {
		var tag = root.tagName.toLowerCase(), i, next;
		if ((HTMLArea.is_ie && root.scopeName != 'HTML') || (!HTMLArea.is_ie && /:/.test(tag))) {
			stripTag(root);
			return false;
		} else {
			clearClass(root);
			clearStyle(root);
			for (i = root.firstChild; i; i = next) {
				next = i.nextSibling;
				if (i.nodeType == 1 && parseTree(i))
					checkEmpty(i);
			}
		}
		return true;
	};
	parseTree(this._doc.body);
	// showStats();
	// this.debugTree();
	// this.setHTML(this.getHTML());
	// this.setHTML(this.getInnerHTML());
	// this.forceRedraw();
	this.updateToolbar();
};

HTMLArea.prototype.forceRedraw = function() {
	this._doc.body.style.visibility = "hidden";
	this._doc.body.style.visibility = "visible";
	// this._doc.body.innerHTML = this.getInnerHTML();
};

// focuses the iframe window.  returns a reference to the editor document.
HTMLArea.prototype.focusEditor = function() {
	switch (this._editMode) {
	    // notice the try { ... } catch block to avoid some rare exceptions in FireFox
	    // (perhaps also in other Gecko browsers). Manual focus by user is required in
        // case of an error. Somebody has an idea?
	    case "wysiwyg" : try { this._iframe.contentWindow.focus() } catch (e) {} break;
	    case "textmode": try { this._textArea.focus() } catch (e) {} break;
	    default	   : alert("ERROR: mode " + this._editMode + " is not defined");
	}
	return this._doc;
};

// takes a snapshot of the current text (for undo)
HTMLArea.prototype._undoTakeSnapshot = function() {
	++this._undoPos;
	if (this._undoPos >= this.config.undoSteps) {
		// remove the first element
		this._undoQueue.shift();
		--this._undoPos;
	}
	// use the fasted method (getInnerHTML);
	var take = true;
	var txt = this.getInnerHTML();
	if (this._undoPos > 0)
		take = (this._undoQueue[this._undoPos - 1] != txt);
	if (take) {
		this._undoQueue[this._undoPos] = txt;
	} else {
		this._undoPos--;
	}
};

HTMLArea.prototype.undo = function() {
	if (this._undoPos > 0) {
		var txt = this._undoQueue[--this._undoPos];
		if (txt) this.setHTML(txt);
		else ++this._undoPos;
	}
};

HTMLArea.prototype.redo = function() {
	if (this._undoPos < this._undoQueue.length - 1) {
		var txt = this._undoQueue[++this._undoPos];
		if (txt) this.setHTML(txt);
		else --this._undoPos;
	}
};

// updates enabled/disable/active state of the toolbar elements
HTMLArea.prototype.updateToolbar = function(noStatus) {
	var doc = this._doc;
	var text = (this._editMode == "textmode");
	var ancestors = null;
	if (!text) {
		ancestors = this.getAllAncestors();
		if (this.config.statusBar && !noStatus) {
			this._statusBarTree.innerHTML = HTMLArea.I18N.msg["Path"] + ": "; // clear
			for (var i = ancestors.length; --i >= 0;) {
				var el = ancestors[i];
				if (!el) {
					// hell knows why we get here; this
					// could be a classic example of why
					// it's good to check for conditions
					// that are impossible to happen ;-)
					continue;
				}
				var a = document.createElement("a");
				a.href = "#";
				a.el = el;
				a.editor = this;
				a.onclick = function() {
					this.blur();
					this.editor.selectNodeContents(this.el);
					this.editor.updateToolbar(true);
					return false;
				};
				a.oncontextmenu = function() {
					// TODO: add context menu here
					this.blur();
					var info = "Inline style:\n\n";
					info += this.el.style.cssText.split(/;\s*/).join(";\n");
					alert(info);
					return false;
				};
				var txt = el.tagName.toLowerCase();
				a.title = el.style.cssText;
				if (el.id) {
					txt += "#" + el.id;
				}
				if (el.className) {
					txt += "." + el.className;
				}
				a.appendChild(document.createTextNode(txt));
				this._statusBarTree.appendChild(a);
				if (i != 0) {
					this._statusBarTree.appendChild(document.createTextNode(String.fromCharCode(0xbb)));
				}
			}
		}
	}

	for (var i in this._toolbarObjects) {
		var btn = this._toolbarObjects[i];
		var cmd = i;
		var inContext = true;
		if (btn.context && !text) {
			inContext = false;
			var context = btn.context;
			var attrs = [];
			if (/(.*)\[(.*?)\]/.test(context)) {
				context = RegExp.$1;
				attrs = RegExp.$2.split(",");
			}
			context = context.toLowerCase();
			var match = (context == "*");
			for (var k = 0; k < ancestors.length; ++k) {
				if (!ancestors[k]) {
					// the impossible really happens.
					continue;
				}
				if (match || (ancestors[k].tagName.toLowerCase() == context)) {
					inContext = true;
					for (var ka = 0; ka < attrs.length; ++ka) {
						if (!eval("ancestors[k]." + attrs[ka])) {
							inContext = false;
							break;
						}
					}
					if (inContext) {
						break;
					}
				}
			}
		}
		btn.state("enabled", (!text || btn.text) && inContext);
		if (typeof cmd == "function") {
			continue;
		}
		// look-it-up in the custom dropdown boxes
		var dropdown = this.config.customSelects[cmd];
		if ((!text || btn.text) && (typeof dropdown != "undefined")) {
			dropdown.refresh(this);
			continue;
		}
		switch (cmd) {
		    case "fontname":
		    case "fontsize":
		    case "formatblock":
			if (!text) try {
				var value = ("" + doc.queryCommandValue(cmd)).toLowerCase();
				if (!value) {
					btn.element.selectedIndex = 0;
					break;
				}
				// HACK -- retrieve the config option for this
				// combo box.  We rely on the fact that the
				// variable in config has the same name as
				// button name in the toolbar.
				var options = this.config[cmd];
				var k = 0;
				for (var j in options) {
					// FIXME: the following line is scary.
					if ((j.toLowerCase() == value) ||
					    (options[j].substr(0, value.length).toLowerCase() == value)) {
						btn.element.selectedIndex = k;
						throw "ok";
					}
					++k;
				}
				btn.element.selectedIndex = 0;
			} catch(e) {};
			break;
		    case "textindicator":
			if (!text) {
				try {with (btn.element.style) {
					backgroundColor = HTMLArea._makeColor(
						doc.queryCommandValue(HTMLArea.is_ie ? "backcolor" : "hilitecolor"));
					if (/transparent/i.test(backgroundColor)) {
						// Mozilla
						backgroundColor = HTMLArea._makeColor(doc.queryCommandValue("backcolor"));
					}
					color = HTMLArea._makeColor(doc.queryCommandValue("forecolor"));
					fontFamily = doc.queryCommandValue("fontname");
					fontWeight = doc.queryCommandState("bold") ? "bold" : "normal";
					fontStyle = doc.queryCommandState("italic") ? "italic" : "normal";
				}} catch (e) {
					// alert(e + "\n\n" + cmd);
				}
			}
			break;
		    case "htmlmode": btn.state("active", text); break;
		    case "lefttoright":
		    case "righttoleft":
			var el = this.getParentElement();
			while (el && !HTMLArea.isBlockElement(el))
				el = el.parentNode;
			if (el)
				btn.state("active", (el.style.direction == ((cmd == "righttoleft") ? "rtl" : "ltr")));
			break;
		    default:
			cmd = cmd.replace(/(un)?orderedlist/i, "insert$1orderedlist");
			try {
				btn.state("active", (!text && doc.queryCommandState(cmd)));
			} catch (e) {}
		}
	}
	// take undo snapshots
	if (this._customUndo && !this._timerUndo) {
		this._undoTakeSnapshot();
		var editor = this;
		this._timerUndo = setTimeout(function() {
			editor._timerUndo = null;
		}, this.config.undoTimeout);
	}

	// check if any plugins have registered refresh handlers
	for (var i in this.plugins) {
		var plugin = this.plugins[i].instance;
		if (typeof plugin.onUpdateToolbar == "function")
			plugin.onUpdateToolbar();
	}
};

/** Returns a node after which we can insert other nodes, in the current
 * selection.  The selection is removed.  It splits a text node, if needed.
 */
HTMLArea.prototype.insertNodeAtSelection = function(toBeInserted) {
	if (!HTMLArea.is_ie) {
		var sel = this._getSelection();
		var range = this._createRange(sel);
		// remove the current selection
		sel.removeAllRanges();
		range.deleteContents();
		var node = range.startContainer;
		var pos = range.startOffset;
		switch (node.nodeType) {
		    case 3: // Node.TEXT_NODE
			// we have to split it at the caret position.
			if (toBeInserted.nodeType == 3) {
				// do optimized insertion
				node.insertData(pos, toBeInserted.data);
				range = this._createRange();
				range.setEnd(node, pos + toBeInserted.length);
				range.setStart(node, pos + toBeInserted.length);
				sel.addRange(range);
			} else {
				node = node.splitText(pos);
				var selnode = toBeInserted;
				if (toBeInserted.nodeType == 11 /* Node.DOCUMENT_FRAGMENT_NODE */) {
					selnode = selnode.firstChild;
				}
				node.parentNode.insertBefore(toBeInserted, node);
				this.selectNodeContents(selnode);
				this.updateToolbar();
			}
			break;
		    case 1: // Node.ELEMENT_NODE
			var selnode = toBeInserted;
			if (toBeInserted.nodeType == 11 /* Node.DOCUMENT_FRAGMENT_NODE */) {
				selnode = selnode.firstChild;
			}
			node.insertBefore(toBeInserted, node.childNodes[pos]);
			this.selectNodeContents(selnode);
			this.updateToolbar();
			break;
		}
	} else {
		return null;	// this function not yet used for IE <FIXME>
	}
};

// Returns the deepest node that contains both endpoints of the selection.
HTMLArea.prototype.getParentElement = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	if (HTMLArea.is_ie) {
		switch (sel.type) {
		    case "Text":
		    case "None":
			// It seems that even for selection of type "None",
			// there _is_ a parent element and it's value is not
			// only correct, but very important to us.  MSIE is
			// certainly the buggiest browser in the world and I
			// wonder, God, how can Earth stand it?
			return range.parentElement();
		    case "Control":
			return range.item(0);
		    default:
			return this._doc.body;
		}
	} else try {
		var p = range.commonAncestorContainer;
		if (!range.collapsed && range.startContainer == range.endContainer &&
		    range.startOffset - range.endOffset <= 1 && range.startContainer.hasChildNodes())
			p = range.startContainer.childNodes[range.startOffset];
		/*
		alert(range.startContainer + ":" + range.startOffset + "\n" +
		      range.endContainer + ":" + range.endOffset);
		*/
		while (p.nodeType == 3) {
			p = p.parentNode;
		}
		return p;
	} catch (e) {
		return null;
	}
};

// Returns an array with all the ancestor nodes of the selection.
HTMLArea.prototype.getAllAncestors = function() {
	var p = this.getParentElement();
	var a = [];
	while (p && (p.nodeType == 1) && (p.tagName.toLowerCase() != 'body')) {
		a.push(p);
		p = p.parentNode;
	}
	a.push(this._doc.body);
	return a;
};

// Selects the contents inside the given node
HTMLArea.prototype.selectNodeContents = function(node, pos) {
	this.focusEditor();
	this.forceRedraw();
	var range;
	var collapsed = (typeof pos != "undefined");
	if (HTMLArea.is_ie) {
		range = this._doc.body.createTextRange();
		range.moveToElementText(node);
		(collapsed) && range.collapse(pos);
		range.select();
	} else {
		var sel = this._getSelection();
		range = this._doc.createRange();
		range.selectNodeContents(node);
		(collapsed) && range.collapse(pos);
		sel.removeAllRanges();
		sel.addRange(range);
	}
};

/** Call this function to insert HTML code at the current position.  It deletes
 * the selection, if any.
 */
HTMLArea.prototype.insertHTML = function(html) {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	if (HTMLArea.is_ie) {
		range.pasteHTML(html);
	} else {
		// construct a new document fragment with the given HTML
		var fragment = this._doc.createDocumentFragment();
		var div = this._doc.createElement("div");
		div.innerHTML = html;
		while (div.firstChild) {
			// the following call also removes the node from div
			fragment.appendChild(div.firstChild);
		}
		// this also removes the selection
		var node = this.insertNodeAtSelection(fragment);
	}
};

/**
 *  Call this function to surround the existing HTML code in the selection with
 *  your tags.  FIXME: buggy!  This function will be deprecated "soon".
 */
HTMLArea.prototype.surroundHTML = function(startTag, endTag) {
	var html = this.getSelectedHTML();
	// the following also deletes the selection
	this.insertHTML(startTag + html + endTag);
};

/// Retrieve the selected block
HTMLArea.prototype.getSelectedHTML = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var existing = null;
	if (HTMLArea.is_ie) {
		existing = range.htmlText;
	} else {
		existing = HTMLArea.getHTML(range.cloneContents(), false, this);
	}
	return existing;
};

/// Return true if we have some selection
HTMLArea.prototype.hasSelectedText = function() {
	// FIXME: come _on_ mishoo, you can do better than this ;-)
	return this.getSelectedHTML() != '';
};

HTMLArea.prototype._createLink = function(link) {
	var editor = this;
	var outparam = null;
	if (typeof link == "undefined") {
		link = this.getParentElement();
		if (link) {
			if (/^img$/i.test(link.tagName))
				link = link.parentNode;
			if (!/^a$/i.test(link.tagName))
				link = null;
		}
	}
	if (!link) {
		var sel = editor._getSelection();
		var range = editor._createRange(sel);
		var compare = 0;
		if (HTMLArea.is_ie) {
			compare = range.compareEndPoints("StartToEnd", range);
		} else {
			compare = range.compareBoundaryPoints(range.START_TO_END, range);
		}
		if (compare == 0) {
			alert("You need to select some text before creating a link");
			return;
		}
		outparam = {
			f_href : '',
			f_title : '',
			f_target : '',
			f_usetarget : editor.config.makeLinkShowsTarget
		};
	} else
		outparam = {
			f_href   : HTMLArea.is_ie ? editor.stripBaseURL(link.href) : link.getAttribute("href"),
			f_title  : link.title,
			f_target : link.target,
			f_usetarget : editor.config.makeLinkShowsTarget
		};
	this._popupDialog("link.html", function(param) {
		if (!param)
			return false;
		var a = link;
		if (!a) try {
			editor._doc.execCommand("createlink", false, param.f_href);
			a = editor.getParentElement();
			var sel = editor._getSelection();
			var range = editor._createRange(sel);
			if (!HTMLArea.is_ie) {
				a = range.startContainer;
				if (!/^a$/i.test(a.tagName)) {
					a = a.nextSibling;
					if (a == null)
						a = range.startContainer.parentNode;
				}
			}
		} catch(e) {}
		else {
			var href = param.f_href.trim();
			editor.selectNodeContents(a);
			if (href == "") {
				editor._doc.execCommand("unlink", false, null);
				editor.updateToolbar();
				return false;
			}
			else {
				a.href = href;
			}
		}
		if (!(a && /^a$/i.test(a.tagName)))
			return false;
		a.target = param.f_target.trim();
		a.title = param.f_title.trim();
		editor.selectNodeContents(a);
		editor.updateToolbar();
	}, outparam);
};

// Called when the user clicks on "InsertImage" button.  If an image is already
// there, it will just modify it's properties.
HTMLArea.prototype._insertImage = function(image) {
	var editor = this;	// for nested functions
	var outparam = null;
	if (typeof image == "undefined") {
		image = this.getParentElement();
		if (image && !/^img$/i.test(image.tagName))
			image = null;
	}
	if (image) outparam = {
		f_base   : editor.config.baseURL,
		f_url    : HTMLArea.is_ie ? editor.stripBaseURL(image.src) : image.getAttribute("src"),
		f_alt    : image.alt,
		f_border : image.border,
		f_align  : image.align,
		f_vert   : image.vspace,
		f_horiz  : image.hspace
	};
	this._popupDialog("insert_image.html", function(param) {
		if (!param) {	// user must have pressed Cancel
			return false;
		}
		var img = image;
		if (!img) {
			var sel = editor._getSelection();
			var range = editor._createRange(sel);
			editor._doc.execCommand("insertimage", false, param.f_url);
			if (HTMLArea.is_ie) {
				img = range.parentElement();
				// wonder if this works...
				if (img.tagName.toLowerCase() != "img") {
					img = img.previousSibling;
				}
			} else {
				img = range.startContainer.previousSibling;
			}
		} else {
			img.src = param.f_url;
		}

		for (var field in param) {
			var value = param[field];
			switch (field) {
			    case "f_alt"    : img.alt	 = value; break;
			    case "f_border" : img.border = parseInt(value || "0"); break;
			    case "f_align"  : img.align	 = value; break;
			    case "f_vert"   : img.vspace = parseInt(value || "0"); break;
			    case "f_horiz"  : img.hspace = parseInt(value || "0"); break;
			}
		}
	}, outparam);
};

// Called when the user clicks the Insert Table button
HTMLArea.prototype._insertTable = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var editor = this;	// for nested functions
	this._popupDialog("insert_table.html", function(param) {
		if (!param) {	// user must have pressed Cancel
			return false;
		}
		var doc = editor._doc;
		// create the table element
		var table = doc.createElement("table");
		// assign the given arguments

		for (var field in param) {
			var value = param[field];
			if (!value) {
				continue;
			}
			switch (field) {
			    case "f_width"   : table.style.width = value + param["f_unit"]; break;
			    case "f_align"   : table.align	 = value; break;
			    case "f_border"  : table.border	 = parseInt(value); break;
			    case "f_spacing" : table.cellSpacing = parseInt(value); break;
			    case "f_padding" : table.cellPadding = parseInt(value); break;
			}
		}
		var cellwidth = 0;
		if (param.f_fixed)
			cellwidth = Math.floor(100 / parseInt(param.f_cols));
		var tbody = doc.createElement("tbody");
		table.appendChild(tbody);
		for (var i = 0; i < param["f_rows"]; ++i) {
			var tr = doc.createElement("tr");
			tbody.appendChild(tr);
			for (var j = 0; j < param["f_cols"]; ++j) {
				var td = doc.createElement("td");
				if (cellwidth)
					td.style.width = cellwidth + "%";
				tr.appendChild(td);
				// Mozilla likes to see something inside the cell.
				(HTMLArea.is_gecko) && td.appendChild(doc.createElement("br"));
			}
		}
		if (HTMLArea.is_ie) {
			range.pasteHTML(table.outerHTML);
		} else {
			// insert the table
			editor.insertNodeAtSelection(table);
		}
		return true;
	}, null);
};

/***************************************************
 *  Category: EVENT HANDLERS
 ***************************************************/

// el is reference to the SELECT object
// txt is the name of the select field, as in config.toolbar
HTMLArea.prototype._comboSelected = function(el, txt) {
	this.focusEditor();
	var value = el.options[el.selectedIndex].value;
	switch (txt) {
	    case "fontname":
	    case "fontsize": this.execCommand(txt, false, value); break;
	    case "formatblock":
		(HTMLArea.is_ie) && (value = "<" + value + ">");
		this.execCommand(txt, false, value);
		break;
	    default:
		// try to look it up in the registered dropdowns
		var dropdown = this.config.customSelects[txt];
		if (typeof dropdown != "undefined") {
			dropdown.action(this);
		} else {
			alert("FIXME: combo box " + txt + " not implemented");
		}
	}
};

// the execCommand function (intercepts some commands and replaces them with
// our own implementation)
HTMLArea.prototype.execCommand = function(cmdID, UI, param) {
	var editor = this;	// for nested functions
	this.focusEditor();
	cmdID = cmdID.toLowerCase();
	if (HTMLArea.is_gecko) try { this._doc.execCommand('useCSS', false, true); } catch (e) {};
	switch (cmdID) {
	    case "htmlmode" : this.setMode(); break;
	    case "hilitecolor":
		(HTMLArea.is_ie) && (cmdID = "backcolor");
	    case "forecolor":
		this._popupDialog("select_color.html", function(color) {
			if (color) { // selection not canceled
				editor._doc.execCommand(cmdID, false, "#" + color);
			}
		}, HTMLArea._colorToRgb(this._doc.queryCommandValue(cmdID)));
		break;
	    case "createlink":
		this._createLink();
		break;
	    case "popupeditor":
		// this object will be passed to the newly opened window
		HTMLArea._object = this;
		if (HTMLArea.is_ie) {
			//if (confirm(HTMLArea.I18N.msg["IE-sucks-full-screen"]))
			{
				window.open(this.popupURL("fullscreen.html"), "ha_fullscreen",
					    "toolbar=no,location=no,directories=no,status=no,menubar=no," +
					    "scrollbars=no,resizable=yes,width=640,height=480");
			}
		} else {
			window.open(this.popupURL("fullscreen.html"), "ha_fullscreen",
				    "toolbar=no,menubar=no,personalbar=no,width=640,height=480," +
				    "scrollbars=no,resizable=yes");
		}
		break;
	    case "undo":
	    case "redo":
		if (this._customUndo)
			this[cmdID]();
		else
			this._doc.execCommand(cmdID, UI, param);
		break;
	    case "inserttable": this._insertTable(); break;
	    case "insertimage": this._insertImage(); break;
	    case "about"    : this._popupDialog("about.html", null, this); break;
	    case "showhelp" : window.open(_editor_url + "reference.html", "ha_help"); break;

	    case "killword": this._wordClean(); break;

	    case "cut":
	    case "copy":
	    case "paste":
		try {
			this._doc.execCommand(cmdID, UI, param);
			if (this.config.killWordOnPaste)
				this._wordClean();
		} catch (e) {
			if (HTMLArea.is_gecko) {
				if (typeof HTMLArea.I18N.msg["Moz-Clipboard"] == "undefined") {
					HTMLArea.I18N.msg["Moz-Clipboard"] =
						"Unprivileged scripts cannot access Cut/Copy/Paste programatically " +
						"for security reasons.  Click OK to see a technical note at mozilla.org " +
						"which shows you how to allow a script to access the clipboard.\n\n" +
						"[FIXME: please translate this message in your language definition file.]";
				}
				if (confirm(HTMLArea.I18N.msg["Moz-Clipboard"]))
					window.open("http://mozilla.org/editor/midasdemo/securityprefs.html");
			}
		}
		break;
	    case "lefttoright":
	    case "righttoleft":
		var dir = (cmdID == "righttoleft") ? "rtl" : "ltr";
		var el = this.getParentElement();
		while (el && !HTMLArea.isBlockElement(el))
			el = el.parentNode;
		if (el) {
			if (el.style.direction == dir)
				el.style.direction = "";
			else
				el.style.direction = dir;
		}
		break;
	    default: try { this._doc.execCommand(cmdID, UI, param); }
		catch(e) { if (this.config.debug) { alert(e + "\n\nby execCommand(" + cmdID + ");"); } }
	}
	this.updateToolbar();
	return false;
};

/** A generic event handler for things that happen in the IFRAME's document.
 * This function also handles key bindings. */
HTMLArea.prototype._editorEvent = function(ev) {
	var editor = this;
	var keyEvent = (HTMLArea.is_ie && ev.type == "keydown") || (!HTMLArea.is_ie && ev.type == "keypress");

	if (keyEvent)
		for (var i in editor.plugins) {
			var plugin = editor.plugins[i].instance;
			if (typeof plugin.onKeyPress == "function")
				if (plugin.onKeyPress(ev))
					return false;
		}
	if (keyEvent && ev.ctrlKey && !ev.altKey) {
		var sel = null;
		var range = null;
		var key = String.fromCharCode(HTMLArea.is_ie ? ev.keyCode : ev.charCode).toLowerCase();
		var cmd = null;
		var value = null;
		switch (key) {
		    case 'a':
			if (!HTMLArea.is_ie) {
				// KEY select all
				sel = this._getSelection();
				sel.removeAllRanges();
				range = this._createRange();
				range.selectNodeContents(this._doc.body);
				sel.addRange(range);
				HTMLArea._stopEvent(ev);
			}
			break;

			// simple key commands follow

		    case 'b': cmd = "bold"; break;
		    case 'i': cmd = "italic"; break;
		    case 'u': cmd = "underline"; break;
		    case 's': cmd = "strikethrough"; break;
		    case 'l': cmd = "justifyleft"; break;
		    case 'e': cmd = "justifycenter"; break;
		    case 'r': cmd = "justifyright"; break;
		    case 'j': cmd = "justifyfull"; break;
		    case 'z': cmd = "undo"; break;
		    case 'y': cmd = "redo"; break;
		    case 'v': if (HTMLArea.is_ie || editor.config.htmlareaPaste) { cmd = "paste"; } break;
		    case 'n': cmd = "formatblock"; value = HTMLArea.is_ie ? "<p>" : "p"; break;

		    case '0': cmd = "killword"; break;

			// headings
		    case '1':
		    case '2':
		    case '3':
		    case '4':
		    case '5':
		    case '6':
			cmd = "formatblock";
			value = "h" + key;
			if (HTMLArea.is_ie)
				value = "<" + value + ">";
			break;
		}
		if (cmd) {
			// execute simple command
			this.execCommand(cmd, false, value);
			HTMLArea._stopEvent(ev);
		}
	}
	else if (keyEvent) {
		// other keys here
		switch (ev.keyCode) {
		    case 13: // KEY enter
			if (HTMLArea.is_gecko && !ev.shiftKey) {
				this.dom_checkInsertP();
				HTMLArea._stopEvent(ev);
			}
			break;
		    case 8: // KEY backspace
		    case 46: // KEY delete
			if (HTMLArea.is_gecko && !ev.shiftKey) {
				if (this.dom_checkBackspace())
					HTMLArea._stopEvent(ev);
			} else if (HTMLArea.is_ie) {
				if (this.ie_checkBackspace())
					HTMLArea._stopEvent(ev);
			}
			break;
		}
	}

	// update the toolbar state after some time
	if (editor._timerToolbar) {
		clearTimeout(editor._timerToolbar);
	}
	editor._timerToolbar = setTimeout(function() {
		editor.updateToolbar();
		editor._timerToolbar = null;
	}, 50);
};

HTMLArea.prototype.scrollToCaret = function() {
	var
		e = this.getParentElement(),
		w = this._iframe.contentWindow,
		h = w.innerHeight || w.height,
		d = this._doc,
		t = d.documentElement.scrollTop || d.body.scrollTop;
	if (typeof h == "undefined")
		return false;
	if (e.offsetTop > h + t)
		w.scrollTo(e.offsetLeft, e.offsetTop - h + e.offsetHeight);
};

HTMLArea.prototype.convertNode = function(el, newTagName) {
	var newel = this._doc.createElement(newTagName), p = el.parentNode;
	while (el.firstChild)
		newel.appendChild(el.firstChild);
	p.insertBefore(newel, el);
	p.removeChild(el);
	return newel;
};

HTMLArea.prototype.ie_checkBackspace = function() {
	var sel = this._getSelection();
	var range = this._createRange(sel);
	var r2 = range.duplicate();
	r2.moveStart("character", -1);
	var a = r2.parentElement();
	if (a != range.parentElement() &&
	    /^a$/i.test(a.tagName)) {
		r2.collapse(true);
		r2.moveEnd("character", 1);
		r2.pasteHTML('');
		r2.select();
		return true;
	}
};

HTMLArea.prototype.dom_checkBackspace = function() {
	var self = this;
	setTimeout(function() {
		var sel = self._getSelection();
		var range = self._createRange(sel);
		var SC = range.startContainer;
		var SO = range.startOffset;
		var EC = range.endContainer;
		var EO = range.endOffset;
		var newr = SC.nextSibling;
		if (SC.nodeType == 3)
			SC = SC.parentNode;
		if (!/\S/.test(SC.tagName)) {
			var p = document.createElement("p");
			while (SC.firstChild)
				p.appendChild(SC.firstChild);
			SC.parentNode.insertBefore(p, SC);
			SC.parentNode.removeChild(SC);
			var r = range.cloneRange();
			r.setStartBefore(newr);
			r.setEndAfter(newr);
			r.extractContents();
			sel.removeAllRanges();
			sel.addRange(r);
		}
	}, 10);
};

HTMLArea.prototype.dom_checkInsertP = function() {
	var i, SC, left, right, r2,
		sel   = this._getSelection(),
		r     = this._createRange(sel),
		p     = this.getAllAncestors(),
		block = null,
		doc   = this._doc,
		body  = doc.body;

	for (i = 0; i < p.length; ++i)
		if (HTMLArea.isBlockElement(p[i]) && !/body|html/i.test(p[i].tagName)) {
			block = p[i];
			break;
		}

	if (!r.collapsed)
		r.deleteContents();
	sel.removeAllRanges();
	SC = r.startContainer;

	if (!block) {
		left = SC;
		for (i = SC; i && i != body && !HTMLArea.isBlockElement(i); i = HTMLArea.getPrevNode(i))
			left = i;
		right = SC;
		for (i = SC; i && i != body && !HTMLArea.isBlockElement(i); i = HTMLArea.getNextNode(i))
			right = i;
		if (left != body && right != body) {
			r2 = r.cloneRange();
			r2.setStartBefore(left);
			r2.surroundContents(block = doc.createElement("p"));
			if (!/\S/.test(HTMLArea.getInnerText(block)))
				block.innerHTML = "<br />";
			block.normalize();
			r.setEndAfter(right);
			r.surroundContents(block = doc.createElement("p"));
			if (!/\S/.test(HTMLArea.getInnerText(block)))
				block.innerHTML = "<br />";
			block.normalize();
		} else {
			r = doc.createRange();
			r.setStart(body, 0);
			r.setEnd(body, 0);
			r.insertNode(block = doc.createElement("p"));
			block.innerHTML = "<br />";
		}
		r.selectNodeContents(block);
	} else {
		r.setEndAfter(block);
		var df = r.extractContents(), left_empty = false;
		if (!/\S/.test(block.innerHTML)) {
			block.innerHTML = "<br />";
			left_empty = true;
		}
		p = df.firstChild;
		if (p) {
			if (!/\S/.test(HTMLArea.getInnerText(p))) {
 				if (/^h[1-6]$/i.test(p.tagName))
 					p = this.convertNode(p, "p");
				p.innerHTML = "<br />";
			}
			if (/^li$/i.test(p.tagName) && left_empty && !block.nextSibling) {
				left = block.parentNode;
				left.removeChild(block);
				r.setEndAfter(left);
				r.collapse(false);
				p = this.convertNode(p, /^[uo]l$/i.test(left.parentNode.tagName) ? "li" : "p");
			}
			r.insertNode(df);
			r.selectNodeContents(p);
		}
	}
	r.collapse(true);
	sel.addRange(r);
	this.forceRedraw();
	this.scrollToCaret();
};

// retrieve the HTML
HTMLArea.prototype.getHTML = function() {
	switch (this._editMode) {
	    case "wysiwyg"  :
		if (!this.config.fullPage) {
			return HTMLArea.getHTML(this._doc.body, false, this);
		} else
			return this.doctype + "\n" + HTMLArea.getHTML(this._doc.documentElement, true, this);
	    case "textmode" : return this._textArea.value;
	    default	    : alert("Mode <" + mode + "> not defined!");
	}
	return false;
};

// retrieve the HTML (fastest version, but uses innerHTML)
HTMLArea.prototype.getInnerHTML = function() {
	switch (this._editMode) {
	    case "wysiwyg"  :
		if (!this.config.fullPage)
			return this._doc.body.innerHTML;
		else
			return this.doctype + "\n" + this._doc.documentElement.innerHTML;
	    case "textmode" : return this._textArea.value;
	    default	    : alert("Mode <" + mode + "> not defined!");
	}
	return false;
};

// completely change the HTML inside
HTMLArea.prototype.setHTML = function(html) {
	switch (this._editMode) {
	    case "wysiwyg"  :
		if (!this.config.fullPage)
			this._doc.body.innerHTML = html;
		else
			// this._doc.documentElement.innerHTML = html;
			this._doc.body.innerHTML = html;
		break;
	    case "textmode" : this._textArea.value = html; break;
	    default	    : alert("Mode <" + mode + "> not defined!");
	}
	return false;
};

// sets the given doctype (useful when config.fullPage is true)
HTMLArea.prototype.setDoctype = function(doctype) {
	this.doctype = doctype;
};

/***************************************************
 *  Category: UTILITY FUNCTIONS
 ***************************************************/

// variable used to pass the object to the popup editor window.
HTMLArea._object = null;

// function that returns a clone of the given object
HTMLArea.cloneObject = function(obj) {
	if (!obj) return null;
	var newObj = new Object;

	// check for array objects
	if (obj.constructor.toString().indexOf("function Array(") == 1) {
		newObj = obj.constructor();
	}

	// check for function objects (as usual, IE is fucked up)
	if (obj.constructor.toString().indexOf("function Function(") == 1) {
		newObj = obj; // just copy reference to it
	} else for (var n in obj) {
		var node = obj[n];
		if (typeof node == 'object') { newObj[n] = HTMLArea.cloneObject(node); }
		else                         { newObj[n] = node; }
	}

	return newObj;
};

// FIXME!!! this should return false for IE < 5.5
HTMLArea.checkSupportedBrowser = function() {
	if (HTMLArea.is_gecko) {
		if (navigator.productSub < 20021201) {
			alert("You need at least Mozilla-1.3 Alpha.\n" +
			      "Sorry, your Gecko is not supported.");
			return false;
		}
		if (navigator.productSub < 20030210) {
			alert("Mozilla < 1.3 Beta is not supported!\n" +
			      "I'll try, though, but it might not work.");
		}
	}
	return HTMLArea.is_gecko || HTMLArea.is_ie;
};

// selection & ranges

// returns the current selection object
HTMLArea.prototype._getSelection = function() {
	if (HTMLArea.is_ie) {
		return this._doc.selection;
	} else {
		return this._iframe.contentWindow.getSelection();
	}
};

// returns a range for the current selection
HTMLArea.prototype._createRange = function(sel) {
	if (HTMLArea.is_ie) {
		return sel.createRange();
	} else {
		this.focusEditor();
		if (typeof sel != "undefined") {
			try {
				return sel.getRangeAt(0);
			} catch(e) {
				return this._doc.createRange();
			}
		} else {
			return this._doc.createRange();
		}
	}
};

// event handling

HTMLArea._addEvent = function(el, evname, func) {
	if (HTMLArea.is_ie) {
		el.attachEvent("on" + evname, func);
	} else {
		el.addEventListener(evname, func, true);
	}
};

HTMLArea._addEvents = function(el, evs, func) {
	for (var i = evs.length; --i >= 0;) {
		HTMLArea._addEvent(el, evs[i], func);
	}
};

HTMLArea._removeEvent = function(el, evname, func) {
	if (HTMLArea.is_ie) {
		el.detachEvent("on" + evname, func);
	} else {
		el.removeEventListener(evname, func, true);
	}
};

HTMLArea._removeEvents = function(el, evs, func) {
	for (var i = evs.length; --i >= 0;) {
		HTMLArea._removeEvent(el, evs[i], func);
	}
};

HTMLArea._stopEvent = function(ev) {
	if (HTMLArea.is_ie) {
		ev.cancelBubble = true;
		ev.returnValue = false;
	} else {
		ev.preventDefault();
		ev.stopPropagation();
	}
};

HTMLArea._removeClass = function(el, className) {
	if (!(el && el.className)) {
		return;
	}
	var cls = el.className.split(" ");
	var ar = new Array();
	for (var i = cls.length; i > 0;) {
		if (cls[--i] != className) {
			ar[ar.length] = cls[i];
		}
	}
	el.className = ar.join(" ");
};

HTMLArea._addClass = function(el, className) {
	// remove the class first, if already there
	HTMLArea._removeClass(el, className);
	el.className += " " + className;
};

HTMLArea._hasClass = function(el, className) {
	if (!(el && el.className)) {
		return false;
	}
	var cls = el.className.split(" ");
	for (var i = cls.length; i > 0;) {
		if (cls[--i] == className) {
			return true;
		}
	}
	return false;
};

HTMLArea._blockTags = " body form textarea fieldset ul ol dl li div " +
"p h1 h2 h3 h4 h5 h6 quote pre table thead " +
"tbody tfoot tr td iframe address ";
HTMLArea.isBlockElement = function(el) {
	return el && el.nodeType == 1 && (HTMLArea._blockTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
};

HTMLArea._closingTags = " head script style div span tr td tbody table em strong b i code cite dfn abbr acronym font a title ";
HTMLArea.needsClosingTag = function(el) {
	return el && el.nodeType == 1 && (HTMLArea._closingTags.indexOf(" " + el.tagName.toLowerCase() + " ") != -1);
};

// performs HTML encoding of some given string
HTMLArea.htmlEncode = function(str) {
	// we don't need regexp for that, but.. so be it for now.
	str = str.replace(/&/ig, "&amp;");
	str = str.replace(/</ig, "&lt;");
	str = str.replace(/>/ig, "&gt;");
	str = str.replace(/\x22/ig, "&quot;");
	// \x22 means '"' -- we use hex reprezentation so that we don't disturb
	// JS compressors (well, at least mine fails.. ;)
	return str;
};

// Retrieves the HTML code from the given node.	 This is a replacement for
// getting innerHTML, using standard DOM calls.
// Wrapper catch a Mozilla-Exception with non well formed html source code
HTMLArea.getHTML = function(root, outputRoot, editor){
    try{
        return HTMLArea.getHTMLWrapper(root,outputRoot,editor);
    }
    catch(e){
        alert('Your Document is not well formed. Check JavaScript console for details.');
        return editor._iframe.contentWindow.document.body.innerHTML;
    }
}

HTMLArea.getHTMLWrapper = function(root, outputRoot, editor) {
	var html = "";
	switch (root.nodeType) {
	    case 1: // Node.ELEMENT_NODE
	    case 11: // Node.DOCUMENT_FRAGMENT_NODE
		var closed;
		var i;
		var root_tag = (root.nodeType == 1) ? root.tagName.toLowerCase() : '';
		if (root_tag == 'br' && !root.nextSibling)
			break;
		if (outputRoot)
			outputRoot = !(editor.config.htmlRemoveTags && editor.config.htmlRemoveTags.test(root_tag));
		if (HTMLArea.is_ie && root_tag == "head") {
			if (outputRoot)
				html += "<head>";
			// lowercasize
			var save_multiline = RegExp.multiline;
			RegExp.multiline = true;
			var txt = root.innerHTML.replace(HTMLArea.RE_tagName, function(str, p1, p2) {
				return p1 + p2.toLowerCase();
			});
			RegExp.multiline = save_multiline;
			html += txt;
			if (outputRoot)
				html += "</head>";
			break;
		} else if (outputRoot) {
			closed = (!(root.hasChildNodes() || HTMLArea.needsClosingTag(root)));
			html = "<" + root.tagName.toLowerCase();
			var attrs = root.attributes;
			for (i = 0; i < attrs.length; ++i) {
				var a = attrs.item(i);
				if (!a.specified) {
					continue;
				}
				var name = a.nodeName.toLowerCase();
				if (/_moz_editor_bogus_node/.test(name)) {
					html = "";
					break;
				}
				if (/_moz|contenteditable|_msh/.test(name)) {
					// avoid certain attributes
					continue;
				}
				var value;
				if (name != "style") {
					// IE5.5 reports 25 when cellSpacing is
					// 1; other values might be doomed too.
					// For this reason we extract the
					// values directly from the root node.
					// I'm starting to HATE JavaScript
					// development.  Browser differences
					// suck.
					//
					// Using Gecko the values of href and src are converted to absolute links
					// unless we get them using nodeValue()
					if (typeof root[a.nodeName] != "undefined" && name != "href" && name != "src" && !/^on/.test(name)) {
						value = root[a.nodeName];
					} else {
						value = a.nodeValue;
						// IE seems not willing to return the original values - it converts to absolute
						// links using a.nodeValue, a.value, a.stringValue, root.getAttribute("href")
						// So we have to strip the baseurl manually :-/
						if (HTMLArea.is_ie && (name == "href" || name == "src")) {
							value = editor.stripBaseURL(value);
						}
					}
				} else { // IE fails to put style in attributes list
					// FIXME: cssText reported by IE is UPPERCASE
					value = root.style.cssText;
				}
				if (/(_moz|^$)/.test(value)) {
					// Mozilla reports some special tags
					// here; we don't need them.
					continue;
				}
				html += " " + name + '="' + value + '"';
			}
			if (html != "") {
				html += closed ? " />" : ">";
			}
		}
		for (i = root.firstChild; i; i = i.nextSibling) {
			html += HTMLArea.getHTMLWrapper(i, true, editor);
		}
		if (outputRoot && !closed) {
			html += "</" + root.tagName.toLowerCase() + ">";
		}
		break;
	    case 3: // Node.TEXT_NODE
		// If a text node is alone in an element and all spaces, replace it with an non breaking one
		// This partially undoes the damage done by moz, which translates '&nbsp;'s into spaces in the data element
		/* if ( !root.previousSibling && !root.nextSibling && root.data.match(/^\s*$/i) ) html = '&nbsp;';
		   else */
		html = /^script|style$/i.test(root.parentNode.tagName) ? root.data : HTMLArea.htmlEncode(root.data);
		break;
	    case 4: // Node.CDATA_SECTION_NODE
		// FIXME: it seems we never get here, but I believe we should..
		//        maybe a browser problem?--CDATA sections are converted to plain text nodes and normalized
		// CDATA sections should go "as is" without further encoding
		html = "<![CDATA[" + root.data + "]]>";
		break;
	    case 8: // Node.COMMENT_NODE
		html = "<!--" + root.data + "-->";
		break;		// skip comments, for now.
	}
	return html;
};

HTMLArea.getPrevNode = function(node) {
	if (!node)                return null;
	if (node.previousSibling) return node.previousSibling;
	if (node.parentNode)      return node.parentNode;
	return null;
};

HTMLArea.getNextNode = function(node) {
	if (!node)            return null;
	if (node.nextSibling) return node.nextSibling;
	if (node.parentNode)  return node.parentNode;
	return null;
};

HTMLArea.prototype.stripBaseURL = function(string) {
	var baseurl = this.config.baseURL;

	// strip to last directory in case baseurl points to a file
	baseurl = baseurl.replace(/[^\/]+$/, '');
	var basere = new RegExp(baseurl);
	string = string.replace(basere, "");

	// strip host-part of URL which is added by MSIE to links relative to server root
	baseurl = baseurl.replace(/^(https?:\/\/[^\/]+)(.*)$/, '$1');
	basere = new RegExp(baseurl);
	return string.replace(basere, "");
};

String.prototype.trim = function() {
	return this.replace(/^\s+/, '').replace(/\s+$/, '');
};

// creates a rgb-style color from a number
HTMLArea._makeColor = function(v) {
	if (typeof v != "number") {
		// already in rgb (hopefully); IE doesn't get here.
		return v;
	}
	// IE sends number; convert to rgb.
	var r = v & 0xFF;
	var g = (v >> 8) & 0xFF;
	var b = (v >> 16) & 0xFF;
	return "rgb(" + r + "," + g + "," + b + ")";
};

// returns hexadecimal color representation from a number or a rgb-style color.
HTMLArea._colorToRgb = function(v) {
	if (!v)
		return '';

	// returns the hex representation of one byte (2 digits)
	function hex(d) {
		return (d < 16) ? ("0" + d.toString(16)) : d.toString(16);
	};

	if (typeof v == "number") {
		// we're talking to IE here
		var r = v & 0xFF;
		var g = (v >> 8) & 0xFF;
		var b = (v >> 16) & 0xFF;
		return "#" + hex(r) + hex(g) + hex(b);
	}

	if (v.substr(0, 3) == "rgb") {
		// in rgb(...) form -- Mozilla
		var re = /rgb\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\s*\)/;
		if (v.match(re)) {
			var r = parseInt(RegExp.$1);
			var g = parseInt(RegExp.$2);
			var b = parseInt(RegExp.$3);
			return "#" + hex(r) + hex(g) + hex(b);
		}
		// doesn't match RE?!  maybe uses percentages or float numbers
		// -- FIXME: not yet implemented.
		return null;
	}

	if (v.substr(0, 1) == "#") {
		// already hex rgb (hopefully :D )
		return v;
	}

	// if everything else fails ;)
	return null;
};

// modal dialogs for Mozilla (for IE we're using the showModalDialog() call).

// receives an URL to the popup dialog and a function that receives one value;
// this function will get called after the dialog is closed, with the return
// value of the dialog.
HTMLArea.prototype._popupDialog = function(url, action, init) {
	Dialog(this.popupURL(url), action, init);
};

// paths

HTMLArea.prototype.imgURL = function(file, plugin) {
	if (typeof plugin == "undefined")
		return _editor_url + file;
	else
		return _editor_url + "plugins/" + plugin + "/img/" + file;
};

HTMLArea.prototype.popupURL = function(file) {
	var url = "";
	if (file.match(/^plugin:\/\/(.*?)\/(.*)/)) {
		var plugin = RegExp.$1;
		var popup = RegExp.$2;
		if (!/\.html$/.test(popup))
			popup += ".html";
		url = _editor_url + "plugins/" + plugin + "/popups/" + popup;
	} else
		url = _editor_url + this.config.popupURL + file;
	return url;
};

/**
 * FIX: Internet Explorer returns an item having the _name_ equal to the given
 * id, even if it's not having any id.  This way it can return a different form
 * field even if it's not a textarea.  This workarounds the problem by
 * specifically looking to search only elements having a certain tag name.
 */
HTMLArea.getElementById = function(tag, id) {
	var el, i, objs = document.getElementsByTagName(tag);
	for (i = objs.length; --i >= 0 && (el = objs[i]);)
		if (el.id == id)
			return el;
	return null;
};



// EOF
// Local variables: //
// c-basic-offset:8 //
// indent-tabs-mode:t //
// End: //