I have seen a nice feature in the template of rockettheme.com - the right column does not scroll while scrolling down the page. This is really neat for a range of uses where a page becomes pretty long (eg blog views).
I have tried to pull the html apart and I found out that this is the div "assume that it's the <div id="sidebar"> that receives different class attributes ("top", "float" und "bottom") - depening on the scrolling position within the page. I assume that this is achieved with the "jCaption" function, but this is where I am getting lost.
So my question is: Is there any way to build this feature into any template (particularly interested in MixxMag and Affinity)? I am aware that is a range of things I need to take into account, but ....
... can please anyone explain to me what the mechanics is to get this effect? Once Column scrolls, the othere doesn't