var http_request = false;

function makeobj()
{
http_request = false;
      if (window.XMLHttpRequest) 
	  { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) 
		 {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } 
	  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('Cannot create XMLHTTP instance');
         return false;
      }
}