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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>CSS Test: Z-index - dynamically setting z-index to bring an element from back to in front of</title>
<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
<link rel="help" title="Section 9.9.1 Specifying the stack level: the 'z-index' property" href="http://www.w3.org/TR/CSS21/visuren.html#z-index" />
<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />
<meta http-equiv="Content-Script-Type" content="text/javascript" />
<meta content="dom" name="flags" />
<meta content="Setting the 'z-index' property of a positioned element can bring it from behind the surface on a lower stack level to a greater stack level passing it in front of another element painted on the surface." name="assert" />
<style type="text/css"><![CDATA[
#test
{
background-color: green;
display: block;
z-index: -1;
}
#red-layer
{
background-color: red;
top: -100px;
z-index: auto;
}
#test, #red-layer
{
height: 100px;
position: relative;
width: 100px;
}
]]></style>
<script type="text/javascript"><![CDATA[
function fromBottomToTopOfStack()
{
document.getElementById("test").style.zIndex = 1;
}
]]></script>
</head>
<body onload="fromBottomToTopOfStack();">
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div><span id="test"></span></div>
<div id="red-layer"></div>
</body>
</html>
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