function OverrideDefaultButton(e, id)
{   
   if (13 == getKeyCode(e))
   {
      var btn = document.getElementById(id);
      if (btn && btn.click)
      {         
         btn.click();
         cancelEvent(e);
      }            
   }
}

function getKeyCode(e)
{
   if (window.event)
      return window.event.keyCode;
   else if (e.which)
      return e.which;
   return -1;
}

function cancelEvent(e)
{
   var e = e || window.event;
   
   e.cancelBubble = true;
   if (typeof e.stopPropagation == 'function')
      e.stopPropagation();
      
   e.returnValue = false;
   if (typeof e.preventDefault == 'function')
      e.preventDefault();
}