<script type="text/javascript">

$(document).ready(function ()

{

$("#<%= masterFileUpload.ClientID %>").change(function ()

{

if ($("#<%= masterFileUpload.ClientID %>").val() != "")

{

$("#<%=txtMasterFilePwd.ClientID%>").removeAttr("disabled", "disabled");

}

else

{

$("#<%=txtMasterFilePwd.ClientID%>").val("");

$("#<%=txtMasterFilePwd.ClientID%>").attr("disabled", "disabled");

}

});

});

</script>

  <tr>

                     <td style="text-align: right" class="auto-style1">**文件名：</td>

                     <td class="auto-style2">

                         <asp:FileUpload ID="masterFileUpload" runat="server" ClientIDMode="Static" Width="350" />

                     </td>

                     <td class="auto-style2">

                         <asp:Label ID="lbmasterFileUpload" runat="server" ClientIDMode="Static"></asp:Label>

                     </td>

                 </tr>

                 <tr>

                     <td style="text-align: right" class="auto-style1">**密码：</td>

                     <td class="auto-style2">

                         <asp:TextBox ID="txtMasterFilePwd" runat="server" CssClass="txt_search" ClientIDMode="Static" Width="200px" onkeydown="if(event.keyCode==222){return false;}"  ></asp:TextBox>

                     </td>

                 </tr>