This is great .. thanks heaps. I applied it and it works very well.

A couple of things I noticed:
1. It doesn't like spoilers. If there is a spoiler in a topic, it won't show the preview.
2. The second item in Step 2 - the Replace With code is missing the "; at the end, although I picked it up straight away, and it wasn't a problem.
Otherwise it's wonderful. I'm going to have a lot of happy users. They've been asking for something like this for ages.
Thanks again!!
