function SubmitForm(codeevent,ctrlName)
  {      
      if ((codeevent.which && codeevent.which == 13) || (codeevent.keyCode && codeevent.keyCode == 13))
       {
       var button = document.getElementById(ctrlName);
       if(button!='undefined') 
       { button.click();}
         return false; 
       } 
       else return true;  }