var request = null;
   
   function createRequest() {
     try {
       request = new XMLHttpRequest();
     } catch (trymicrosoft) {
       try {
         request = new ActiveXObject("Msxml2.XMLHTTP");
       } catch (othermicrosoft) {
         try {
           request = new ActiveXObject("Microsoft.XMLHTTP");
         } catch (failed) {
           request = null;
         }
       }
     }
   }

  function show_elem(id) {
      document.getElementById(id).style.display = 'block';
  }
  
  function hide_elem(id) {
      document.getElementById(id).style.display = 'none';
  }
  
  function check_alerts()
  {
      createRequest();
      var url = "http://www.cuone.org/AlertNotificationDisplay/Controller.aspx?act=CheckAlerts";
       if(navigator.userAgent.search(/msie/i)!=-1)
       {
        request.open("POST", url, true);
       }
       else
       {
        request.open("GET", url, true);
       }
      request.onreadystatechange = check_alerts_response;
      request.send(null);    
  }
  
function check_alerts_response()
{
    if(request.readyState == 4) 
    {
       var Resp = request.responseText;
       if(Resp > 0)
       {
          document.getElementById('alert_number').innerText = Resp;
          show_elem('maint_alerts');
          check_ibl_block();
       }
    }
}

function check_ibl_block()
{
  createRequest();
  var url = "http://www.cuone.org/AlertNotificationDisplay/Controller.aspx?act=CheckIBLoginBlock";
   if(navigator.userAgent.search(/msie/i)!=-1)
   {
    request.open("POST", url, true);
   }
   else
   {
    request.open("GET", url, true);
   }
  request.onreadystatechange = check_ibl_block_response;
  request.send(null);    
}
 
function check_ibl_block_response()
{
    if(request.readyState == 4) 
    {
       var Resp = request.responseText;
       if(Resp > 0)
       {
         //hide_elem('ib_login');
         document.getElementById('userid').disabled=true;
         document.getElementById('userid').style.backgroundColor = '#D8D8D8';
 	 document.getElementById('loginButton').disabled=true;
       }
    }
}