HTML:
1. <a href="domain.com" title="Free DHTML and JavaScripts">
Wonderful Collections</a>
2. <input type="text" size=25 title="Enter your email address here">
3. <div title="JavaScript Kit">JavaScript Kit</div>
JQuery :
http://jquerytools.org/demos/tooltip/index.html
http://jqueryui.com/tooltip/
