function xmlhttpPost(strURL,queryStr,resultFunction,resultFunctionParams,async) { 
   var xmlHttpReq = false; 
   var self = this; 
   var retVal; 

   // Mozilla/Safari 
   if (window.XMLHttpRequest) { 
       self.xmlHttpReq = new XMLHttpRequest(); 
   } 
   // IE 
   else if (window.ActiveXObject) { 
       self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP"); 
   } 

   self.xmlHttpReq.open('POST', strURL+'?'+queryStr, (async == 1?false:true)); 
   //self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
   self.xmlHttpReq.setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");   //This line prevents IE caching of requests 
   self.xmlHttpReq.onreadystatechange = function() { 
       if (self.xmlHttpReq.readyState == 4) { 
           //eval(resultFunction+'('+resultFunctionParams+(resultFunctionParams?',':'')+'\''+self.xmlHttpReq.responseText+'\')'); 
           //alert(self.xmlHttpReq.responseText);
		   if(resultFunctionParams)
			   resultFunction(resultFunctionParams,self.xmlHttpReq.responseText); 
       	   else  
       	   	   resultFunction(self.xmlHttpReq.responseText); 
	   } 
   } 
   self.xmlHttpReq.send(queryStr); 
   return retVal; 
}