Fixed Large embedded images are shown full size when previewing a post

[Brogan]

When previewing a post, large images are shown full size outside the page width.

Using this image for example: http://files.myopera.com/white_demon/albums/886891/ice-age-scrat-wallpaper-hi-res.jpg

Gives this on preview:

 

[Mike]

Fixed locally. Also fixed a couple related issues.