I think Google just changed something in Reader today so that this script and the others it's based on no longer work.

Works best compared to another script that auto-previews, I like having control over when to preview (since many feeds have their own that's enough without loading the real article).

Only change I had to make in the script was on line 203, I made the height 720px which is much better for my screen.

Works perfectly!

This script is a big time saver.