Here is the rendered page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="stylesheet" type="text/css" href="http://extjs.cachefly.net/ext-3.4.0/resources/css/ext-all.css" />
<title>
</title>
<script type="text/javascript" src="http://extjs.cachefly.net/ext-3.4.0/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="http://extjs.cachefly.net/ext-3.4.0/ext-all.js"></script>
<script type="text/javascript" src="/testapp/extnet/extnet-core-js/ext.axd?v=24281"></script>
<script type="text/javascript">
//<![CDATA[
Ext.net.ResourceMgr.init({id:"ctl02",BLANK_IMAGE_URL:"http://extjs.cachefly.net/ext-3.4.0/resources/images/default/s.gif",aspForm:"form1",theme:"blue",appName:"testapp"});Ext.onReady(function(){Ext.QuickTips.init();new Ext.Window({id:"ctl03",html:"<h1>TEST</h1>",renderTo:Ext.get("form1"),height:300,width:400,title:"Test Window",hidden:false});});
//]]>
</script>
</head>
<body>
<form name="form1" method="post" action="webform3.aspx" id="form1">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE1NTA5NzI5NzcPZBYCAgMPZBYCAgMPZBYCZg8WAh4FY2xhc3MFCHgtaGlkZGVuZBgBBR5fX0NvbnRyb2xzUmVxdWlyZVBvc3RCYWNrS2V5X18WAgUFY3RsMDIFBWN0bDAzFpj7g89wcdmJ2GPVV3j8CGYvSx8QL0UvxVAuE2mupfQ=" />
</div>
<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</script>
<div>
<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAgKMx9OFAwKfwImNC2aWk8LDD09wPpoXVy7+GQ94vb6dofbaOFbqH+2qYX/4" />
</div>
<div>
</div>
</form>
</body>
</html>