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function setup_dropdowns() {
var els = document.getElementsByTagName('UL');
for (var i = 0; i < els.length; i++) {
var el = els[i];
if (el.className.search(/\bcontents\b/) > -1) {
enable_dropdown(el);
}
}
}
function enable_dropdown(el) {
var title = el.getElementsByTagName('LI')[0];
var plus_minus = document.createTextNode(' [-]');
if (title.childNodes[0].tagName != 'A') {
anchor = document.createElement('A');
while (title.childNodes.length) {
anchor.appendChild(title.childNodes[0]);
}
anchor.setAttribute('href', '#');
anchor.style.padding = '1px';
title.appendChild(anchor);
} else {
anchor = title.childNodes[0];
}
anchor.appendChild(plus_minus);
function show_hide() {
if (el.sub_hidden) {
set_sub_li(el, '');
anchor.removeChild(plus_minus);
plus_minus = document.createTextNode(' [-]');
anchor.appendChild(plus_minus);
} else {
set_sub_li(el, 'none');
anchor.removeChild(plus_minus);
plus_minus = document.createTextNode(' [+]');
anchor.appendChild(plus_minus);
}
el.sub_hidden = ! el.sub_hidden;
return false;
}
anchor.onclick = show_hide;
show_hide();
}
function set_sub_li(list, display) {
var sub = list.getElementsByTagName('LI');
for (var i = 1; i < sub.length; i++) {
sub[i].style.display = display;
}
}
function add_onload(func) {
if (window.onload) {
var old_onload = window.onload;
function new_onload() {
old_onload();
func();
}
window.onload = new_onload;
} else {
window.onload = func;
}
}
add_onload(setup_dropdowns);
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