Image Link Replacer

The Image Link Replacer module replaces broken images with a "sorry - this image is missing" image, and marks broken links by putting a strike-through on them.

It acts like an input filter (and probably it will become an input filter).
It searches links in the <a> and <img> tags in the content of a node before it goes to the rendering process (using a hook_nodeapi on $op=='view'), then compares them with results in the linkchecker "links" table. If the url is marked as failed a configurable number of times, then replaces / marks it.

Code is under review (I'm cleaning up things a bit), but it's already used in some production sites, and coming soon here..