Grrrr - Sidebar Dropping :(

I am currently working on a client site which is being upgraded from 1.2.7 to 1.3.2 - remember I am in NO WAY new to zen and I have never ever had this happen before, and actually the problem is prolly right under my nose but I am just not grabbing it ;)

Anyways, the site I am working on is here :
http://azpoolplans.com/index.php

and I am having problems with the left sidebar. I have edited css every place I can think of and set it to vertical align top but for some reason it drops.

Like I said, it's prolly right under my nose and I am being blind, but can someone take a peek at that page, click on a product or all products or something and confirm that this happens to them as well and then if it does how bout a stab at fixin' it ?

Thanks Everyone!

In your stylesheet you have the following> .column_left, .column_right, .column_single {

background: #ffffff;
padding: 2px;
vertical-align: top;

}It should be> .columnLeft, .columnRight, .columnSingle {

background: #ffffff;
padding: 2px;
vertical-align: top;

}Then your vertical-align styling will take.

See - I knew it was something stupidly right under my nose that I wasn't picking up!

Thanks so much for allowing me to use your eyes :)