I got the menu  displays on IE7, FF2 but on Chrome it show bad.

Who can help me !!!pls

 I believe this is caused because ASP.NETtreats unknown browsers as low level browsers. Basically ASP.NET does not know if the requesting browser can properly display the content so it renders out a basic view that any browser can render. I had this same problem with safari a while back. i can't recall exactly how to fix this. Something about a browser file or something in the page registration... Ask google :D

 Thanks.

But I wonder, when i run demo on Chrome, it's good.

 Check the demo code if you can and verify that they are not adding any additional code or properties to the page. Also check for the presense of a browser file