Page not working in IE 7 & 8, but is fine in IE9

Hello all,

I have a slider puzzle that I’m working on. It works fine in Safari/Firefox on the Mac and PC. It works fine in IE9, and it even works fine on the iPad and iPhone. Where it doesn’t work is in IE 7 & 8.

I don’t know enough to understand why it doesn’t work in IE 7/8, but would like to know if someone can help me to figure out why and to fix it.

The link is www.ba-doyn.com/junk/puzzle

Thanks so much.
Michael

wc3, visit there site and check your site if its folowing there standards, if you do that you will in 99% of the cases see a good site, same in all browsers in other words: crowbrowser save.

Thanks. I’ll give it a try but I’m not really sure what I’m looking for as I’m pretty raw at html 5/cross browser stuff. The puzzle was chosen off the web and I’m trying to get it to work as best as I can.

Michael