function makeHttpRequest(url, callback_function, return_xml)
{
  var   r=/(ASPSESSION.*)\=([^\;\&]*)/ig;  
  r.exec(document.cookie);   


  var http_request = false;

   if (window.XMLHttpRequest) { // Mozilla, Safari,...
       http_request = new XMLHttpRequest();
       if (http_request.overrideMimeType) {
           //http_request.overrideMimeType('text/xml');
       }

   } else if (window.ActiveXObject) { // IE
       try {
           http_request = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (e) {
           try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
           } catch (e) {}
       }
   }

   if (!http_request) {
       alert('Unfortunatelly you browser doesn\'t support this feature.');
       return false;
   }
   http_request.onreadystatechange = function() {
       if (http_request.readyState == 4) {
           if (http_request.status == 200) {
               if (return_xml) {
               	 
                   eval(callback_function + '(http_request.responseXML)');
               } else {
               	   
                   eval(callback_function + '(http_request.responseText)');
               }
           } else {
               alert('There was a problem with the request.(Code: ' + http_request.status + ')');
           }
       }
   }
	
  http_request.open('GET', url, false);
  //http_request.setRequestHeader("Cache-Control",   "no-cache");  
  //http_request.setRequestHeader("Connection",   "Keep-Alive");  
  //http_request.setRequestHeader("Accept",   "*/*");  
  //http_request.setRequestHeader("User-Agent",   "Mozilla/4.0   (compatible;   MSIE   6.0;   Windows   NT   5.1;   .NET   CLR   1.0.3215;   .NET   CLR   1.0.3705)");  
  //http_request.setRequestHeader(temp1,temp2);  

  http_request.send(null);
}