function GetXMLHttp() {
	if(window.XMLHttpRequest) {//Mozilla, Opera, Safari, ...
		xmlHttp = new XMLHttpRequest();
	}
	else
		if (window.ActiveXObject) {//Internet Explorer
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return xmlHttp;	

    
}
var xmlRequest = GetXMLHttp();