$.validator.setDefaults({
	 success: true
});

$.extend($.validator.prototype,{
		showLabel: function(element, message) {
			var label = $(element).siblings('label');
			label.removeClass();			
			if (message) {
				label.addClass('error');
				label.find('span.error').html(message);
			} else {
				label.addClass('tips');				
				label.find('span.error').html('');
			}
		}
});

jQuery.validator.addMethod("domain", function(value, element, params) { 
    return this.optional(element) || value.match(new RegExp('^[a-z0-9\\-_]+(?:\\.[a-z]{2,}){1,2}$', 'i'));
}, $.format("域名不符合规范"));