open this CSS file:
/plugins/system/flexibleZoomEffect/media/css/flexibleZoomEffect.css
and include this CSS rule:
div#ja-mainnav { z-index:999;}
the problem will be resolved.
If you like Zoom Effect and satisfied with the support you have received, please "write a review" on:
www.flexiblewebdesign.com/Virtuemart-Modules/Virtuemart-Zoom-Effect-Plugin
Write couple of sentences to share your experience with the support team.
Just 2-3 sentences would be enough ;) It might sound simple to you, but it is extremely important. Potential customers care about product reviews very much.
Thanks in advance!
Regards,
Support