function expand(event_id, tag) {
   descObj=document.getElementById('event_'+event_id).style;
   exObj=document.getElementById('ex_event_'+event_id).style;
   if (descObj.display=='none')
   {
   	descObj.display='';
   	exObj.display='none';
	tag.innerHTML = "";
   }
   else {
   	descObj.display='none';
   	exObj.display='';
    tag.innerHTML = "Read More";
   }
}