Bubble Tooltips Bubble Tooltips are an easy way to add (via a bit of CSS and javascript) fancy tooltips with a balloon shape to any web page. Before we begin, here it is the example: just roll over any link to see them in action. They operate this way: 1. A check for DOM support is performed 2. If found, the title and href attributes of links are extracted from the page and they're injected into a DOM structure 3. When the mouse is rolled over a link, the related tooltip (styled with CSS) is displayed Installation and customization of Bubble Tooltips is quite easy.