var MyValidator = function() { 
    var handleSubmit = function() { 
        $('.form-horizontal').validate({ 
            errorElement : 'span', 
            errorClass : 'help-block', 
            focusInvalid : false, 
            rules : { 
                name : { 
                    required : true 
                }, 
                password : { 
                    required : true 
                }, 
                intro : { 
                    required : true 
                } 
            }, 
            messages : { 
                name : { 
                    required : "Username is required." 
                }, 
                password : { 
                    required : "Password is required." 
                }, 
                intro : { 
                    required : "Intro is required." 
                } 
            }, 
            highlight : function(element) { 
                $(element).closest('.form-group').addClass('has-error'); 
            }, 
            success : function(label) { 
                label.closest('.form-group').removeClass('has-error'); 
                label.remove(); 
            }, 
            errorPlacement : function(error, element) { 
                element.parent('div').append(error); 
            }, 
            submitHandler : function(form) { 
                form.submit(); 
            } 
        }); 
        $('.form-horizontal input').keypress(function(e) { 
            if (e.which == 13) { 
                if ($('.form-horizontal').validate().form()) { 
                    $('.form-horizontal').submit(); 
                } 
                return false; 
            } 
        }); 
    } 
    return { 
        init : function() { 
            handleSubmit(); 
        } 
    }; 
}();