Slide Show in iFrame gets stuck loading in FireFox, help

[Chad Meyers]

The website page is here http://www.livingstonehfx.ca/gallery

The 3 images at the top open SlideShow in an iFrame (via CeraBox)

Only in FireFox in Windows/Mac/Linux does it get stuck, showing only the loading circle, not animated.  If you hover over the left or right of where the image is and click (next, prev) it will load and work.

If you right click the image and say open in new tab, the page opens and works fine.  Any ideas? This is beyond me.

(This site is built in Joomla, so some of what I had to do to make this work is totally ass backwards, but that what Joomla gets you. essentially in the end, all it is is a blank slideshow page in an iFrame)