User blog comment:Sarah Manley/Try the New Wikia Editor/@comment-1786037-20110621213808

Putting the preview in a popup box is not a good idea. It actually renders the preview function useless for testing the page layout before submitting it. The preview box's content area does not have the same width as the content area of the article page, and it does not allow you to see the article in the wiki's visual context.

Another issue I noticed: With JavaScript disabled, there is no preview button at all, but only the submit button. There should at least be a button that leads to the regular preview page.