var uno = new LiveValidation( 'login', {onlyOnSubmit: true } );
		uno.add(Validate.Email);
		uno.add( Validate.Presence );
		var dos = new LiveValidation( 'clave', {onlyOnSubmit: true } );
		dos.add( Validate.Presence );
		
	  var automaticOnSubmit = uno.form.onsubmit;
	  uno.form.onsubmit = function(){
		  var valid = automaticOnSubmit();
		  if(valid)submit();
		return false;
	  }