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