function GetXmlHttpObject()
{
	var xmlHttp = null;
	
	try
	{
	  xmlHttp = new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari
	}
	catch (e)
	{
		// Internet Explorer
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	
	if (xmlHttp == null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	return xmlHttp;
}