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 || XMLHttpRequestObject.status == 304)){
				callback(XMLHttpRequestObject.responseText);
				delete XMLHttpRequestObject;
				XMLHttpRequestObject = null;
			}
		}
		XMLHttpRequestObject.send(null);
	}
}