Mega Code Archive
Check node descendant
<![CDATA[
< html>
<head>
<script type="text/javascript">
var djConfig = {
baseScriptUri : "js/dojo/"
};
</script>
<script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
<script>
function testIt() {
alert(dojo.isDescendant(dojo.byId("div3"), dojo.byId("div1")));
}
</script>
</head>
<body onLoad="testIt();">
<span id="div1"></span>
<span id="div2"><span id="div3"></span></span>
</body>
</html>
]]>