Tooltips for you:

It's never been easier to add tooltips to your site.
  1. Add this piece of HTML code anywhere on your page:
    <script type="text/javascript" src="http://tbcdb.com/tooltips/power.js?vnew"></script>
    <script>var aowow_tooltips = { "colorlinks": true, "iconizelinks": true, "renamelinks": true }</script>
  2. You are done!
Links found on your site will now sport a tooltip and an icon. The following pages are supported: achievement, profile, item, npc, object, spell, quest. Icons show up by default, you can customize the colors of your links, and easily rename them!