function tellerror(msg, url, linenumber){

 var  urlw = c_domain+ "onClientSideError.aspx?msg='" + msg+"'";   
             urlw+="&url='"+ url+"'";
             urlw+="&line="+ linenumber;
             urlw+="&browser='"+ navigator.userAgent+"'"; 
             urlw+="&page='"+ window.location.href+"'";
                      
               
           var xhr; 
             try {  xhr = new ActiveXObject('Msxml2.XMLHTTP');   }
            catch (e) 
            {
                try {   xhr = new ActiveXObject('Microsoft.XMLHTTP');    }
                catch (e2) 
                {
                  try {  xhr = new XMLHttpRequest();     }
                  catch (e3) {  xhr = false;   }
                }
             }
  
           xhr.open("GET", urlw,  true); 
           xhr.send(null);    
           return false; 
}

window.onerror=tellerror