Additional Images not rendering properly in Firefox

I'm using Image Handler 2 and Magic Zoom Plus for my images in Zen Cart.

I'm also using Clyde Jone's Product Info Display Stacked Left to achieve the layout I want and after I installed his MOD, I went into my tpl_product_info in my cherry_zen template and I rearranged my page, moving my Product Description above my Attributes box so that my product description is the first thing you see.

When I view my page in IE8, the thumbnails view correctly they are underneath the main image which is the way that they are set up in my tpl_product_info. When I view it in Firefox 3.6.6, they are aligned next to the main image instead of underneath it, and they run into my description.

Chrome doesn't work properly either, the main image just disappears. I realize that Chrome isn't supported, but Firefox is.

Can someone tell me what I need to do to make this page render correctly in Firefox the way it does in IE with the smaller shirt images underneath the main image.

Here's my site -

http://redkapworkwear.com/testsetup/index.php?main_page=product_info&cPath=14&products_id=15

#productAdditionalImages {float:left;} seems to fix it in FF, and probably in Chrome, but I don't know if it will mess things up in IE.

Steve, if I lived close to you, I would take you out to lunch! It works PERFECTLY now. It just took a minute to fix, thank you so much, you've been such a help to me!