how to set default button press enter key in mvc3,razor

hi all,

how to set the default button on press enter key. not working my jquery script code.
my code like this

  @*<script type="text/javascript">              $(document).ready(function () {
                  $("#MyForm").keypress(function (e) {
                      kCode = e.keyCode || e.charCode //for cross browser
                      if (kCode == 13) {
                          var defaultbtn = $(this).attr("DefaultButton");
                          $("#" + defaultbtn).click();
                          return false;
                      }
                  });
              });
&lt;/script>*@

          &lt;script type="text/javascript">
              var ButtonKeys = { "EnterKey": 13 };
              $(function () {
                  $("#MyForm").keypress(function (e) {
                      if (e.which == ButtonKeys.EnterKey) {
                          var defaultButtonId = $(this).attr("DefaultButton");
                          $("#" + defaultButtonId).click();
                          return false;
                      }
                  });
              });
&lt;/script>

 @using (Html.BeginForm("NewCustomer", "Customer", FormMethod.Post, new { DefaultButton = "btnContinue", id = "MyForm", Name = "MyForm" }))
    {   <div id="login">
         <table style="vertical-align:5px;">
                        <tr>
                           <td>
      Enter Your Email ID
                            @Html.TextBoxFor(m => m.EmailId, new { @tabindex = "1", @Id = "subemail", @Name = "subemail"})
                            </td>
                        </tr>

                         <tr>
                            <td>

                                    Select Your City</h2>
                            @Html.DropDownListFor(m => m.Address.City, new SelectList(ViewBag.CityList, "ItemValue", "ItemText"), new { @tabindex = "2"})


                            </td>
                        </tr>
                        <tr>
                            <td>
                                &lt;input type="submit" value="Great Deals" class="btn" name="Continue" id="btnContinue"  runat="server" tabindex="3"/>

                    </table>
                </div>

but am select the city after then press the enter key but not working
please help me thanking you