<body>
<form id="form1" runat="server">
<div>
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:ModalPopupExtender ID="Button1_ModalPopupExtender" runat="server"
PopupControlID="Panel1"
CancelControlID="btnCancel" OkControlID="btnOkay"
PopupDragHandleControlID="PopUpHeader" Drag="true"
DynamicServicePath="" Enabled="false" TargetControlID="Button1">
</asp:ModalPopupExtender>
<br />
<br />
<br />
<br />
<asp:Panel ID="Panel1" runat="server">
<div class="HelloWorldPopUp">
<div class="PopUpHeader" id="PopUpHeader">Header</div>
<div class="PopUpBody">
<p>This is simple modal dialog</p>
</div>
<div>
<div class="controls">
<asp:Button ID="btnOkay" runat="server" Text="Done" />
<asp:Button ID="btnCancel" runat="server" Text="Cancel" />
</div>
</div>
</div>
</asp:Panel>
<br />
</ContentTemplate>
</asp:UpdatePanel>
<asp:button ID="Button2" runat="server" text="Button" />
<br />
</div>
</div>
</form>
</body>