//Create a boolean variable to check for a valid Internet Explorer instance.
	var xmlhttp = false;	
	//Check if we are using IE.
	try {
		//If the Javascript version is greater than 5.
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (exception1) {
		//If not, then use the older active x object.
		try {
			//If we are using MS.
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (exception2) {
			//Else we must be using a non-IE browser.
			xmlhttp = false;
		}
	}
	
	//If we are using a non-IE browser, create a javascript instance of the object.
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		xmlhttp = new XMLHttpRequest();
	}

	function getModData(dataSource,divID)
	{
	if(xmlhttp)
	{
	var targetDiv=document.getElementById(divID);
	xmlhttp.open("HEAD",dataSource);
	
	xmlhttp.onreadystatechange=function()
	{
	if(xmlhttp.readyState==4 && xmlhttp.status==200)
	{
	targetDiv.innerHTML="Website last modified: "+xmlhttp.getResponseHeader("Last-Modified");
	}
	}
	xmlhttp.send(null);
	}
	}