code: function(value, element, param) {
  			// bind to the blur event of the target in order to revalidate whenever the target field is updated
  			// TODO find a way to bind the event just once, avoiding the unbind-rebind overhead
  			var target = $(param).unbind(".validate-equalTo").bind("blur.validate-equalTo", function() {
  				$(element).valid();
  			});
  			return value == target.val();
  		}
docs: http://docs.jquery.com/Plugins/Validation/Methods/equalTo