I have 2 .js files. One for a smooth horizontal scroll with arrows (anchor links), instead of just "jumping" to the link or using the bottom scroller. (js/thw.js)
The other is for a .png hack so the images are transparent in IE6. (js/pngfix.js)
If you view the site in IE6, you will see that the 2 arrows at the end of the navigation are not transparent, and the navigation is not working--it jumps to the section instead of smoothly scrolling to it.
The background in the "About Dave" section is also not transparent.