function CompareCheck()
	{
		// Mozilla version
		if (window.XMLHttpRequest) {
			objXML = new XMLHttpRequest();
		}
		// IE version
		else if (window.ActiveXObject) {
			objXML = new ActiveXObject("MSXML2.XMLHTTP");
		}
		
		var myXMLBegin = "<compare>\n";
		var myXMLEnd = "</compare>";
		var myXMLMid = "";

		for (i = 0; i < document.getElementsByTagName("input").length; i++)
		{
			if (document.getElementsByTagName("input")[i].id.indexOf("ProdCompare") > 0)
			{
				if (document.getElementsByTagName("input")[i].checked)
				{
					myXMLMid = myXMLMid + "<item>\n<prodid>" + document.getElementsByTagName("input")[i].value + "</prodid>\n<active>1</active>\n</item>\n";
				}
				else
				{
					myXMLMid = myXMLMid + "<item>\n<prodid>" + document.getElementsByTagName("input")[i].value + "</prodid>\n<active>0</active>\n</item>\n";
				}
			}
		}
		objXML.onreadystatechange = Compared;
		objXML.open("POST","CompareUpdate.aspx");
		objXML.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
		objXML.send(myXMLBegin + myXMLMid + myXMLEnd);
	}

	function Compared()
	{
		if (objXML.readyState==4) {
			var message = "";
			var xmlDoc = objXML.responseXML.documentElement;
			message = xmlDoc.getElementsByTagName("message")[0].childNodes[0].nodeValue;
			if (message != "Added")
			{
				alert(message);
			}
		}
	}