Hi Paul,
I use IE8 and a Webstyle dropdown works on my system.
Vista Ultimate, 4GB RAM, Intel Core 2 Duo processor.
Try the test page I just put up
http://btaylor.50megs.com/ws-dd/index.htm
The two button navbar was made using Webstyle 4. The navbar was put into a Xara Web Designer web page using a placeholder object and the script line from the Webstyle exported .htm page when saving the navbar.
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