How do I break this script

(function () {
    var h = {
        userName: "4-12\u4e2a\u82f1\u6587\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf",
        userNameMin: "\u4e0d\u80fd\u5c0f\u4e8e4\u4e2a\u5b57",
        userNameMax: "\u4e0d\u80fd\u8d85\u8fc712\u4e2a\u5b57",
        userNameExist: "\u8be5\u7528\u6237\u540d\u5df2\u88ab\u6ce8\u518c\u4e86\uff0c\u8bf7\u6362\u6362",
        userNameInvalid: "\u53ea\u652f\u6301\u82f1\u6587\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf",
        userNameStartInvalid: "\u7528\u6237\u540d\u4e0d\u80fd\u4ee5\u4e0b\u5212\u7ebf\u5f00\u5934",
        nickName: "6\u4f4d\u4ee5\u5185\u4e2d\u6587\u621612\u4f4d\u4ee5\u5185\u82f1\u6587\u5b57\u7b26",
        nickNameMin: "\u4e0d\u80fd\u5c0f\u4e8e1\u4e2a\u5b57",
        nickNameMax: "\u4e0d\u80fd\u8d85\u8fc76\u4e2a\u6c49\u5b57\u621612\u4e2a\u82f1\u6587\u5b57\u7b26",
        nickNameExist: "\u8be5\u540d\u5b57\u5df2\u88ab\u5360\u7528\uff0c\u8bf7\u6362\u6362",
        nickNameInvalid: "\u53ea\u652f\u6301\u4e2d\u6587\u3001\u5b57\u6bcd\u6216\u6570\u5b57\uff0c\u4e0d\u652f\u6301\u7a7a\u683c\u548c\u7279\u6b8a\u7b26\u53f7",
        nickNameError: "\u540d\u5b57\u4e2d\u542b\u6709\u8fdd\u7981\u8bcd\uff0c\u8bf7\u4fee\u6539\uff0c\u671b\u8c05\u89e3",
        password: "6-16\u4f4d\u82f1\u6587\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf",
        passwordMin: "\u4e0d\u80fd\u5c0f\u4e8e6\u4e2a\u5b57\u7b26",
        passwordMax: "\u4e0d\u80fd\u8d85\u8fc716\u4e2a\u5b57\u7b26",
        passwordInvalid: "\u53ea\u652f\u6301\u82f1\u6587\u5b57\u6bcd\u3001\u6570\u5b57\u548c\u4e0b\u5212\u7ebf",
        password1: "\u8bf7\u518d\u786e\u8ba4\u4e00\u6b21\u4f60\u8f93\u5165\u7684\u5bc6\u7801",
        password1Invalid: "\u4e24\u6b21\u5bc6\u7801\u8f93\u5165\u4e0d\u4e00\u81f4",
        email: "\u8bf7\u8f93\u5165\u4f60\u5e38\u7528\u7684Email",
        emailExist: "\u8be5Email\u5df2\u88ab\u6ce8\u518c",
        emailInvalid: "Email\u683c\u5f0f\u4e0d\u6b63\u786e",
        sex: "\u8bf7\u9009\u62e9\u4f60\u7684\u6027\u522b",
        validateCode: "\u8bf7\u8f93\u5165\u56fe\u50cf\u4e2d\u7684\u6587\u5b57",
        validateCodeInvalid: "\u9a8c\u8bc1\u7801\u9519\u8bef",
        loading: '<img align="absmiddle" alt="" src="http://images.digu.com/web_res_v1/images/ico_loading16.gif" /> \u6b63\u5728\u68c0\u67e5\u552f\u4e00\u6027',
        checkCode: '<img align="absmiddle" alt="" src="http://images.digu.com/web_res_v1/images/ico_loading16.gif" /> \u6b63\u5728\u68c0\u67e5\u9a8c\u8bc1\u7801',
        ok: '<img align="absmiddle" alt="ok" src="http://images.digu.com/web_res_v1/images/ico_valid.gif" />',
        required: "\u5fc5\u586b"
    },
        a = 4,
        j = 12,
        e = 1,
        k = 12,
        r = 6,
        x = 16,
        l = "/jump?aid=reg_validate",
        d = true,
        o = true,
        B = true;
    var p = $("#userName"),
        D = $("#nickName"),
        c = $("#password"),
        s = $("#password1"),
        z = $("#email"),
        q = $('input[name="sex"]'),
        i = $("#validateCode"),
        b = {};
    b[p.attr("id")] = u(p),
    b[D.attr("id")] = u(D),
    b[c.attr("id")] = u(c),
    b[s.attr("id")] = u(s),
    b[z.attr("id")] = u(z),
    b[q.attr("name")] = u(q),
    b[i.attr("id")] = u(i);

    function t(E) {
        var G = A(E.val()),
            F = b[E.attr("id")];
        if (G.length < a) {
            F.showErr(h.userNameMin)
        } else {
            if (G.length > j) {
                F.showErr(h.userNameMax)
            } else {
                if (!/^([a-z]|[A-Z]|[0-9])[0-9a-zA-Z_]+$/.test(G)) {
                    F.showErr(h.userNameStartInvalid)
                } else {
                    if (!g(G)) {
                        F.showErr(h.userNameInvalid)
                    } else {
                        if (w(G)) {
                            F.showErr(h.userNameExist)
                        } else {
                            F.showTips(h.loading);
                            $.getJSON(l, {
                                tag: "userName",
                                userName: G
                            },


                            function (H) {
                                if (H.result == "successName") {
                                    F.showOk(h.ok);
                                    d = true
                                } else {
                                    if (H.result == "existName") {
                                        F.showErr(h.userNameExist);
                                        d = false
                                    }
                                }
                            })
                        }
                    }
                }
            }
        }
    }
    function w(F) {
        var E = /^(1[3|5|8][0-9]{9})$/;
        return E.test(F)
    }
    function v(E) {
        var G = A(E.val()),
            F = b[E.attr("id")];
        if (!n(G)) {
            F.showErr(h.nickNameInvalid)
        } else {
            if (C(G) < e) {
                F.showErr(h.nickNameMin)
            } else {
                if (C(G) > k) {
                    F.showErr(h.nickNameMax)
                } else {
                    F.showTips(h.loading);
                    $.getJSON(l, {
                        tag: "nickName",
                        nickName: G
                    },


                    function (H) {
                        if (H.result == "successNickName") {
                            F.showOk(h.ok);
                            o = true
                        } else {
                            if (H.result == "repeatNickName") {
                                F.showErr(h.nickNameExist);
                                o = false
                            } else {
                                if (H.result == "errorNickName") {
                                    F.showErr(h.nickNameError);
                                    o = false
                                }
                            }
                        }
                    })
                }
            }
        }
    }
    function u(F) {
        var E = F.parents("tr").find(".tips-box");
        return {
            showTips: function (G) {
                F.addClass("reg-ipt-focus");
                E.removeClass("tips-box-err").removeClass("tips-box-ok").html(G).show()
            },
            showErr: function (G) {
                F.addClass("reg-ipt-focus");
                E.addClass("tips-box-err").removeClass("tips-box-ok").html(G).show()
            },
            showOk: function (G) {
                F.addClass("reg-ipt-focus");
                E.addClass("tips-box-ok").removeClass("tips-box-err").html(G).show()
            },
            hide: function () {
                F.removeClass("reg-ipt-focus");
                E.hide()
            }
        }
    }
    function g(F) {
        var E = new RegExp("^[A-Za-z0-9_]+$");
        return F.match(E)
    }
    function n(F) {
        var E = /^([0-9a-zA-Z\u4E00-\u9FA5])+$/;
        return E.test(F)
    }
    function C(H) {
        var G = 0;
        var F = /([\u4E00-\u9FA5])/;
        for (var E = 0; E < H.length; E++) {
            if (F.test(H.charAt(E))) {
                G += 2
            } else {
                G++
            }
        }
        return G
    }
    function y(E) {
        return /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/.test(E)
    }
    function m(E) {
        return E.replace(/(^\s*)/g, "")
    }
    function f(E) {
        return E.replace(/(\s*$)/g, "")
    }
    function A(E) {
        return f(m(E))
    }
    $("#regForm").submit(function () {
        var E = true;
        if (p.val() == "") {
            b[p.attr("id")].showErr(h.required);
            E = false
        }
        if (D.val() == "") {
            b[D.attr("id")].showErr(h.required);
            E = false
        }
        if (c.val() == "") {
            b[c.attr("id")].showErr(h.required);
            E = false
        }
        if (s.val() == "") {
            b[s.attr("id")].showErr(h.required);
            E = false
        }
        if (c.val().toLowerCase() != s.val().toLowerCase()) {
            b[s.attr("id")].showErr(h.password1Invalid);
            E = false
        }
        if (z.val() == "") {
            b[z.attr("id")].showErr(h.required);
            E = false
        }
        if (i.val() == "") {
            b[i.attr("id")].showErr(h.required);
            E = false
        }
        if (q.filter(":checked").length == 0) {
            b[q.attr("name")].showErr(h.required);
            E = false
        }
        return E
    });
    $(".reg-ipt").focus(function () {
        b[this.id].showTips(h[this.id])
    }).blur(function () {
        if ($(this).val() == "") {
            b[this.id].hide()
        }
    });
    p.blur(function () {
        if ($(this).val() != "") {
            t($(this))
        }
    }).keyup(function () {
        $("#userDomain").text($(this).val())
    });
    D.blur(function () {
        if ($(this).val() != "") {
            v($(this))
        }
    });
    c.keyup(function () {
        if (c.val() != "") {
            $("#confirmPwd").show()
        } else {
            $("#confirmPwd").hide()
        }
    }).blur(function () {
        var F = $(this).val(),
            E = b[this.id];
        if (F != "") {
            if (F.length < r) {
                E.showErr(h.passwordMin)
            } else {
                if (F.length > x) {
                    E.showErr(h.passwordMax)
                } else {
                    if (!g(F)) {
                        E.showErr(h.passwordInvalid)
                    } else {
                        E.showOk(h.ok)
                    }
                }
            }
        }
    });
    s.blur(function () {
        var F = $(this).val(),
            E = b[this.id];
        if (F.toLowerCase() != c.val().toLowerCase()) {
            E.showErr(h.password1Invalid)
        } else {
            E.showOk(h.ok)
        }
    });
    z.blur(function () {
        var F = A($(this).val()),
            E = b[this.id];
        if (F != "") {
            if (!y(F)) {
                E.showErr(h.emailInvalid)
            } else {
                E.showTips(h.loading);
                $.getJSON(l, {
                    tag: "email",
                    email: F
                },


                function (G) {
                    if (G.result == "emailSuccess") {
                        E.showOk(h.ok);
                        B = true
                    } else {
                        if (G.result == "notOnly") {
                            E.showErr(h.emailExist);
                            B = false
                        }
                    }
                })
            }
        }
    });
    q.click(function () {
        var E = b[q.attr("name")];
        if (q.filter(":checked").length > 0) {
            E.showOk(h.ok)
        }
    });
    i.blur(function () {
        var F = $(this).val(),
            E = b[this.id];
        if (F.length != 4) {
            E.showErr(h.validateCodeInvalid)
        } else {
            E.showTips(h.checkCode);
            $.getJSON(l, {
                tag: "code",
                code: F
            },


            function (G) {
                if (G.result == "codeSuccess") {
                    E.showOk(h.ok)
                } else {
                    if (G.result == "errorCode") {
                        E.showErr(h.validateCodeInvalid)
                    }
                }
            })
        }
    });
    $("#changeImgCode").click(function () {
        $("#imgCode").attr("src", "/index/image.jsp?" + (new Date).getTime());
        i.val("");
        return false
    })
})();