function stopBubble(e) {
      // If an event object is provided, then this is a non-IE browser
      if ( e )
          // and therefore it supports the W3C stopPropagation() method
          e.stopPropagation();
      else
          // Otherwise, we need to use the Internet Explorer way of cancelling event bubbling
          window.event.cancelBubble = true;
  }