function GetXmlHttpObject(){
//Create XmlHttpRequest object
	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");
		}
	}
	return xmlHttp;
}