Comment 1 for bug 529929

I implemented a quick fix for this in 0dacf2cc018ba23cd89876d5f83b720a58e74ae4. Might not be the best fix, but for now it'll work. It means that a wysiwyg editor in a block instance config form will not obtain focus automatically.

The problem has to do with the fact that block instance config forms are dynamically inserted into the page after it has already loaded, so the javascript variable specifying which wysiwyg editor to focus was undefined. The fix simply checks first.