on Image mouseover i want content place holder to pop up ? code for this

<asp:Image ID="Image3" runat="server" Height="135px" ImageUrl="~/Image/ad/l-series-touch.jpg" Width="239px" />

                    <asp:PopupControlExtender ID="Image3_PopupControlExtender" runat="server" 

                       PopupControlID="Panel1" 

                        Position="Left"

                        TargetControlID="Image3">

                    </asp:PopupControlExtender>

                      <asp:Panel ID="Panel1" runat="server" ForeColor="Black"  BackImageUrl="~/Backround/bg.gif"  Height="121px" Width="289px"  BackColor="White" >

             

             <ul class="text1">

             <li>Model Name:: VAIO L Series.</li>

             <li>Process::Intel® CoreT i3 and i5 processors.</li>

             <li>Display::15.6&quot; widescreen HD display brings life closer.</li>

             <li>HardDisk&RAM:500GB &3GB</li>

             <li>Price::55000</li>

             </ul>

             </asp:Panel>

                <br />

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