There is a great little article over at CodeLair about HTML elements which have been depreciated and what to do about it:

The W3C has set several HTML elements and attributes as obselete. This tutorial shows you the HTML you shouldn’t be using, and the best ways to replace your ‘illegal’ code.

There are several HTML elements and attributes that have now been declared deprecated by the World Wide Web Consortium (the organization that sets HTML standards). ‘Deprecated’ means that the elements no longer serve a purpose and have been replaced by other methods, mostly involving cascading stylesheets (CSS). Although it is recommended that web browsers continue to support them, eventually they will become obsolete.

This page lists all the deprecated elements and attributes of HTML 4, and specifies the recommended replacements for them.