Magic Thumb - my navigation shows through zoomed image.

[galaxygirl]

My navigation shows through the zoomed Magic Thumb image. I thought I knew how z-index works, but I obviously don't know what I am doing. Thanks for your help. Here is a page:

(click on the menu icon lower right part of page...)  http://www.uridesigns.com/watts/dining.html

[igga]

Change Magic Thumb parameter 'z-index' to '9999999' (menu using 999999)