modalpopupextender have an element style change .

Question

I have created modal popup extender and it worked! but i cant change the style in it. this is the code for the ModalPopupExtender. As you can see, the style for the panel is none.

 

<asp:LinkButton ID="lnkDummy" runat="server"></asp:LinkButton>

<cc1:ModalPopupExtender ID="ModalPopupExtender1" BehaviorID="mpe"

runat="server" PopupControlID="pnlPopup" TargetControlID="lnkDummy" BackgroundCssClass="modalBackground" CancelControlID = "btnHide">

</cc1:ModalPopupExtender> <asp:Panel ClientIDMode="Static" ID="pnlPopup"

runat="server" CssClass="modalPopup" style="display:none"> <div class="header">

Modal Popup </div> <div class="body">

 

This is a Modal Popup.

 

<br /> <div class="modal-footer">

<asp:Button ID="btnHide" runat="server" Text="Hide Modal Popup" /> </div> </div> </asp:Panel>

 

but when I run it at browser, i got this. the style is there which is

 

<div id="pnlPopup" class="modalPopup" style="position: fixed; z-index: 10002; left: 810px; top: 248px;">

 

how to remove that style, or customize it? where is that style come from?