.net mvc2框架，簡單jquery表單驗證

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> 
 
 
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> 
    YzTest 
</asp:Content> 
 
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> 
<script src="../../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> 
<script type="text/javascript"> 
    $(document).ready(function () { 
        $("#Form1").submit(function () { 
            var a = $("#Email").val(); 
            var validate = true; 
            alert(a); 
            if (a == "") { 
                validate = false; 
                $("#DEmail").html("對不起，該選項不能為空"); 
            } 
            else { 
                var reg =/^(0|[1-9]\d*)$/; 
                alert(reg.test(a)); 
                if (reg.test(a)) { 
                    if (a > 100 || a < 0) { 
                        alert("a"); 
                        validate = false; 
                        $("#DEmail").html("年齡范圍在0-100之間！"); 
                    } 
                    else { 
                        $("#DEmail").html(""); 
                    } 
                } 
                else { 
                    $("#DEmail").html("請輸入數字"); 
                    validate = false; 
                } 
            } 
            return validate; 
        }); 
    }); 
</script> 
    <h3>驗證測試</h3> 
    <%using (Html.BeginForm("YzTest", "Home", FormMethod.Post, new { id = "Form1" })) 
      {%> 
    <table> 
    <tr> 
    <td> 
    (Email驗證) 
    </td> 
    <td><input type="text" id="Email"/><div id="DEmail"></div></td> 
    </tr> 
    <tr><td><input type="submit" value="驗證" /></td></tr> 
    </table> 
    <%} %> 
     
</asp:Content> 

貼代碼。