Slider always on top

[rezoan]

Currently i have fall into a problem with slider and Window.
For simplicity i have added a slider and a window in my asp.net form.
Everything is fine except if i click to the slider scroll button and drag the window on top of the slider scroll button, slider scroll button shows on top of the window. even i can scroll the slider from there as well.

may be something z-index related problem but i am not sure.

Code is below:

    <ext:ResourceManager runat="server"></ext:ResourceManager>
    <form id="form1" runat="server">
    <div>
    <ext:Slider runat="server" ID="Slider1" Width="214" />        
    </div>
    <ext:Window runat="server" ID="wnd" ></ext:Window>
    </form>

See the attached screenshot for visual representation.

What is the reason behind this or did i missed any configuration?

To prevent this, any help will be appreciated.

[rezoan]

Guys, TopThumbZIndex="0" property of Slider fixed the problem.