function _submit() {//form提交事件
            var btn_obj = $("#reg-button");
            window.setTimeout(function() {
                $("#regForm").ajaxSubmit({
                    beforeSubmit: function(formData, jqForm, options) {
                        var v = $("#regForm").validationEngine({ returnIsValid: true });
                        if (!v) {
                            var target = $("dd .input-error").eq(0);
                            if (target.length > 0) {
                                $("html,body").animate({ scrollTop: (target.offset().top - 5) }, 500, function() { target.focus(); });
                            }
                        }

                        btn_obj.text("处理中...").attr({ "disabled": "disabled" });（这段位置不知道放哪合适）
                        return v;
                    },
                    dataType: "json",
                    success: function(data) {
                        //alert(data.msg);
                        btn_obj.removeAttr("disabled").text("立即注册");
                    },
                    resetForm: true
                });

            }, 6000);

            return false;
        }