I'm having a very weird issue with the Dreamweaver Extension I am building. The
page consists of several overlapping LAYER tags that are swapped by changing
their visibility (hide/show) and their zIndex.

On LAYERs without a SELECT box, everything works fine. Links can be
clicked, and images that have onmouseover/onmouseout states work fine.

However, on LAYERs with one or more SELECT boxes, none of the elements
on the newly-visible layer respond to mouseover or click until the SELECT box
receives manual focus, either by clicking on it or by hitting the TAB key.

I've triple-checked the zIndex property settings, and I know they're right.
Other form elements don't cause this problem. It's only SELECT elements.
Suggestions?

Thanks in advance!