function GetXmlHttpObject(handler) { 
	var objXmlHttp=null;
	if (navigator.userAgent.indexOf("Opera")>=0) {
		alert("Database cannot be accessed in Opera. Please use a different web browser.");
		return;
	}
	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) {
		objXmlHttp=new XMLHttpRequest();
		objXmlHttp.onload=handler;
		objXmlHttp.onerror=handler;
		return objXmlHttp;
	}
}

function xmlReqGet(object,listener,url) {
	window[object] = GetXmlHttpObject(eval(listener));
	window[object].open("GET", url, true);
	window[object].send(null);
}

function xmlReqPost(object,listener,url,args) {
	window[object] = GetXmlHttpObject(listener);
	window[object].open("POST", url, true);
	window[object].setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
	window[object].send(args);	
}