Hovercard is a lightweight jQuery plugin that allows you to display related information when a link, image or any other HTML elements are hovered upon. Also commonly referred to as tooltips, these in-line boxes provide a great way to return relevant information all the while keeping your visitors on the same page. They can be really handy when displaying people’s bio information, book author and pricing details, or loading other contextual information on-the-fly.
Hovercard uses minimum CSS and can support any HTML content – you can mix text with images and can style them accordingly. The most recent version has built-in Twitter and Facebook hovercards functionality whereby which recent Tweets or Facebook account details for a person or group are fetched and rendered in the hovercard automatically.