Center div when using AnimationExtender

 I'm trying to center a div that pops up when I click on a button. It works fine and fades in/out but I need to center it on the screen. Can anyone point me in the right direction. Here is a snippet of my code. 

 <ajaxToolkit:AnimationExtender id="OpenHelp" runat="server" TargetControlID="btnHelp"> <Animations> <OnClick> <Sequence> <StyleAction Attribute="display" Value="" AnimationTarget="divScanHelp" /> <FadeIn AnimationTarget="divScanHelp" Duration=".3"/> </Sequence> </OnClick> </Animations> </ajaxToolkit:AnimationExtender> <ajaxToolkit:AnimationExtender id="CloseHelp" runat="server" TargetControlID="btnClose2"> <Animations> <OnClick> <Sequence> <FadeOut AnimationTarget="divScanHelp" Duration=".3"/> </Sequence> </OnClick> </Animations> </ajaxToolkit:AnimationExtender> <div id="divScanHelp" class="ScannerHelp" style="width: 330px; height: 224px; display: none;"> <table border="0" width="100%" cellpadding="2" cellspacing="1"> <tr><td align="right"><asp:ImageButton ID="btnClose2" runat="server" OnClientClick="return false;" CausesValidation="false" ImageUrl="./graphics/Icon_Close_Small.gif" ToolTip="Close" /></td></tr> <tr><td valign="middle" align="center" style="margin-top: 8px;"><img src="./graphics/scan-label.gif" border="0" width="300" height="194" style="border: 1px solid #c0c0c0;"></td></tr> </table> </div>

Add a Script animation to your OnClick sequence to invoke a javascript function that centers the div.

Use the _layout method of the ModalPopupBehavior class (ModalPopupBehavior.js in the toolkit) as a guide for developing your own center function. If you have relatively-positioned containers in your div's ancestry, look at my other post titled "For those having trouble with relatively-positioned ModalPopupExtenders."

Hope this helps.

CascadingDropDown screen flicker

I have loaded the Beta 1.0 Ajax Extensions as well as release 61020 of the Ajax Control Toolkit.

I followed the migration documentation and notice that the CDD controls that I am using cause the entire browser screen to flicker.

This was NOT the case with the previous release. It occurs on the Ajax Control Toolkit demo site as well as in the example project. Postback elimination was one of the primary reasons for my using these controls.

What gives?

Ken J.

It's still not posting back, so that's not the issue. It looks fine to me in IE7, so could you please indicate which browser(s) do/do not exhibit the problem for the demo site athttp://ajax.asp.net/ajaxtoolkit/?