You may try to set the z-index order of WebGrid and your menu (drop down list) so that the z-index of the drop down list of the menu is bigger than the z-index of WebGrid.

Could you please inform us whether the drop down list is using Intersoft control or other third party control?

I'm using the asp menu.  I have attached the css\style and the menu page.  Could you please take a look and show me how to use the z-index to make the drop down menu on the "filter" button appear in front.  Thanks.

I downloaded the test page and have it tested on my local end. After view the page in browser, I found that the issue is not persisting in here.

I’m using WebGrid 7.0 build 429 and WebUI.NET Framework 3.0 build 770. The page is viewed under IE 8 and IE 9 browser. Enclosed is the screenshot of the page when viewed in IE 9 browser.

Please let us know your response.