Prototip - Tooltips for prototype. Intro Prototip allows you to easily create both simple and complex tooltips using the Prototype javascript framework.
If you also use Scriptaculous you can even add some nice effects to them. DHTML Window widget. Note: Last updated Oct 29th, 07 to v1.1.
See changelog. Description: This is a robust DHTML Window widget that replicates the look and functionality of a traditional pop-up window, minus the intrusiveness. Drag or resize the window widget on the page, minimize or close it, load a new page into it, or spawn whole new windows just as you would with popups. DHTML JavaScript Tooltips. Tooltips, DHTML, javascript - BoxOver.