if( pageValidator.Masks["EmailMask"] == null )
pageValidator.Masks["EmailMask"] = function( event )
{
   if( !event ) event = window.event;

   var iKeyCode = String(event.keyCode ? event.keyCode : event.which);

   if( event.type == 'keydown' )
   {
      sInvalidKeyCodes = keyboardHandling.KeyDown["SPACE"] + ',' + keyboardHandling.KeyDown["COMMA"] + ',' + keyboardHandling.KeyDown["NUM_COMMA"];
   }
   else if( event.type == 'keypress' )
   {
      sInvalidKeyCodes = keyboardHandling.KeyPress["SPACE"] + ',' + keyboardHandling.KeyPress["COMMA"];
   }

   if( iKeyCode.IsIn(sInvalidKeyCodes) )
   {
      if( event.cancelable ) event.preventDefault();
      return false;
   }
}