function GetXmlHttpObject() {
	var objXMLHttp = null;
	if (window.XMLHttpRequest) {
		objXMLHttp = new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP")
	}
	if (objXMLHttp == null) {
		//alert ("Browser does not support HTTP Request")
		return null;
	} 
	return objXMLHttp
}