IE recognize JQuery script partially

IE recognize JQuery script partially

Hi, I'm stuck in this problem with IE 7: I'm designing a very simple sliding contents tree, so it works nice with Opera, Safari and -of course- Firefox and co. (Flock and Netscape) but it really sucks with IE 7. I welcome every suggest because I'm just starting with JQuery so, something must be bad in my script. I think JQuery is nice and I don't want try another JS framework because it's very powerful.

So, you can try my work in here:
http://www.video-oposiciones.com/privad ... enidos.php

(It's in spanish because I'm peruvian, but you just need hit on icons to slide panels) There is a copy of my script below tree. PHP made this tree with database stored records, then I add some JS-JQuery scripts to put it on move. IE 7 obey some instructions (relate to hide some DIVs and Ps, and to change icons to empty items) but the toggle commands don't work.

Please, I know IE sucks but sadly most people got it in its PCs.