I have set the minimum height for the background image expecting that when a table started to extend the page that the image would keep repeating downward as the page grew. But for some reason it isn't occuring. The image does repeat along y up until 600px. I am pretty sure becuase it's only a 100px height image, so it appears to be repeating quite well up until that point.
I've only been able to check it in firefox 2.

Thanks in advance for your time.

#lftsidebar { background-image: url(../images/left_shadow.png);
width: 32px;
min-height: 600px;
background-repeat: repeat-y;
float: left;
margin: 0;
padding: 0;