function createHTTPRequestObject() {
    try {
		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	} catch (e) {
		xmlHttp=new XMLHttpRequest();
	}
	return xmlHttp;
}

function sendRequest(myRequestObj,myURL,myReadyStateChangeFunction) {
	myRequestObj.open("GET",myURL,true);
	myRequestObj.onreadystatechange=myReadyStateChangeFunction;
	myRequestObj.send(null);
}