[jQuery] Safari, Thickbox 3 and rolling over images = glitch?

[jQuery] Safari, Thickbox 3 and rolling over images = glitch?


I don't run a Mac, or have access to one, so I'm asking you all for a
little assistance please. A client running Safari had this to say
about my implementation of Thickbox:
When you roll over a certain area, mostly right on the outermost
border of each picture, then the header blinks in and out and looks
weird.
Here's a screencap he sent me:
http://www.commadelimited.com/uploads/safari_glitch.jpg
And here's the page itself:
http://www.atkinshomebuilders.com/photo-gallery.html
Does anyone have any idea why this might be happening? It works great
in IE and FF for the PC as well as FF for the Mac.