Oke`, first of all.
If you want to apply a style to the entire html don’t do it like this.
html { style }
/* The correct one is */
* { style }
Your problem is that you have applied height: 100% to all divisions, why? And also, why do you position: relative all your divisions?
If you want your sidebar 100% of users screen do it like this.
body { height: 100% }
#sidebar { height: 100%; }
I tried to apply it straight to your code, the bad news is that it’s messing the whole site, you will see if you try it. The good news is that it’s working and it’s stretching the sidebar to the whole height of the screen.
I think your code is bad, you should rewrite it.
Here’s an example.
http://www.webmasterworld.com/forum83/200.htm
