function collapseit(selmenu, n) {
 for (var i=1; i<=n; i++) {
   document.getElementById('idmenu' + i).style.visibility='hidden'; 
   document.getElementById('idmenu' + i).style.height='0';
 }
  document.getElementById(selmenu).style.visibility='visible'; 
  document.getElementById(selmenu).style.height='auto';
  
}

 function sendRequest(url) {  
  req.open('GET', url);  
  req.onreadystatechange = handleResponse;  
  req.send(null);  
  return false;  
 }  
   
 function handleResponse() {  
  if(req.readyState == 4){  
   var response = req.responseText;  
   document.getElementById("right").innerHTML = response;  
  }  
 }