function GetXmlHttpObject(handler){ 
	var objXmlHttp=null;
	
	if (navigator.userAgent.indexOf("MSIE")>=0)	{ 
		var strName="Msxml2.XMLHTTP";
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0) {
			strName="Microsoft.XMLHTTP";
		} 
		try	{ 
			objXmlHttp=new ActiveXObject(strName);
			objXmlHttp.onreadystatechange=handler;
			return objXmlHttp;
		} catch(e) { 
			alert("Error. Scripting for ActiveX might be disabled");
			return;
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0 || navigator.userAgent.indexOf("Opera")>=0) {
		objXmlHttp=new XMLHttpRequest();
		objXmlHttp.onload=handler;
		objXmlHttp.onerror=handler;
		return objXmlHttp;
	}
}