/* paths to deleted pages */
a[href="/pages/contact.asp"],
a[href="/pages/email.asp"]
{ border-width: 0px; }

/* a deleted javascript function call */
a[onclick*="old()"]
{ border: 5px dashed red; }

http://www.nealgrosskopf.com/tech/thread.asp?pid=14

Using CSS3 selectors, highlight links to deleted pages and 404 pages. Also highlight function calls to deleted javascript using this CSS technique.

Using CSS To Find Broken Links & 404 Pages

css, CSS3

CSS