function delete_discussion(did,divid){
 var url = '/ajax_controller';
 var prm = 'provider=del_discussion&discussion_id='+did; 
 XmlHttp = $GX();
 XmlHttp.onreadystatechange=function showResult() {
  if (XmlHttp.readyState == 4 || XmlHttp.readyState == "complete") {
   var resultofrequest = eval('(' + XmlHttp.responseText + ')')
   if(resultofrequest.success == 1) {                
    $('#'+divid).fadeOut("slow");      
      } else {
    alert('Please try again.');
   }   
  } 
 } 
 XmlHttp.open("POST",url,true);
 $Header(XmlHttp,prm)
}