function getDataReturnText(url, callback){
var XMLHttpRequestObject = false;
if(window.XMLHttpRequest){
XMLHttpRequestObject = new XMLHttpRequest();
}else if(window.ActiveXObject){
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");}
if(XMLHttpRequestObject){
XMLHttpRequestObject.open("GET", url);
XMLHttpRequestObject.onreadystatechange = function(){
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200){
callback(XMLHttpRequestObject.responseText);
delete XMLHttpRequestObject;
XMLHttpRequestObject = null;}}
XMLHttpRequestObject.send(null);}}