Hi, I noticed that if you add empty <div /> tags to firefox, it treats it like if you forgot to close it. That can cause weird behavior on ajax replacements for example, as it treats the subsequent tags as children of the <div /> tag.
I think we should have a MarkupFilter that replaces all <div /> tags with <div></div>. This semes to be also case for <span>, <p>, <b>, ... etc. -Matej