var xmlHttpCal;
//Get all calendar
    function ajxGetCal(url)
    { 
        try 
        { 
            xmlHttpCal = GetXmlHttpObject(Callback_Cal); 
            SendXmlHttpRequest(xmlHttpCal, url); 
        }
        catch(e){} 
    } 
        
    //Callback_ will fire when the data is received back 
    function Callback_Cal() 
    { 

        try
        {
        
            //readyState of 4 or 'complete' represents 
            //that data has been returned 
            if (xmlHttpCal.readyState == 4 || 
                xmlHttpCal.readyState == 'complete')
            {
                var response = xmlHttpCal.responseText; 
                if (response.length > 0)
                {
                    //update page
                    document.getElementById("CalTD").innerHTML = response;
                }
                else
                {
                    document.getElementById("CalTD").innerHTML = "";
                }
                
            }
            
        }
        catch(e)
        {
            alert(e.message);

        }
    }
  

  //Delete calendar entry