Change image opacity with slider

Hi,

its strange the code is not working with master  and content page,

here is the code i place in content page and its not working please advice

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/jquery-ui.min.js"></script>
    <link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.3/themes/base/jquery-ui.css"
        type="text/css" />
    <script type="text/javascript">
        $(document).ready(function () {
            $('#slider').slider({ min: 0, max: 1, step: 0.1, value: 1 })
            .bind("slidechange", function () {
                var o = $(this).slider('value');
                var e = '#' + $(this).attr('data-wjs-element');
                $(e).css('opacity', o)
            });
        });
    </script>
    <style type="text/css">
        #Panel3
        {
            width: 200px;
            height: 100px;
            background-color: #ff0000;
        }
        #slider
        {
            width: 200px;
        }
    </style>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

 <div id="slider" data-wjs-element="Panel3">
    </div>
    <br />
    <img id="Panel3" runat="server" src="http://www.aspforums.net/Avatars/Shashikant.jpg?635862636668500000"
        alt="Alternate Text" />
       <%-- <asp:Panel ID="Panel3" runat="server" BackImageUrl="http://www.aspforums.net/Avatars/Shashikant.jpg?635862636668500000">
        </asp:Panel>--%>
</asp:Content>

now it work with master and content page,

but stil there is a problem if i use html image control so it works but when i use asp image control so solution does not work.

any advice..