100% height!

yes, it's another 100% height issue.

I have a div, #leftColumn, that I want to expand to 100% of the height of its parent element, #mainWindow. I am under the impression that should work, but I can't seem to get it so. Is it a "positioning" issue?

Here's the page: http://newsite.osbhcn.org/SBHCs_Oregon/

Any help would be greatly appreciated!!!

Hello BenDesign,
#leftcolumn will only expand to the height of it's content. Google faux columns to see how to make it look like it's expanded the full height of the page.

I have some examples of that here:
example1 (http://www.nopeople.com/CSS/equal%20column%20heights/)
example2 (http://www.nopeople.com/CSS/equal_length_columns/)
example3 (http://www.nopeople.com/CSS/faux_3-column/)

I had a feeling there was no true solution. It meant I had to get rid of my shading on the bg box, which was subtle anyway and this'll make it easier in the long run.

The new version: http://newsite.osbhcn.org/SBHCs_Oregon/

THANK YOU VERY MUCH FOR YOUR HELP!!!!!