Bookmarklet

A bookmarklet is a simple way to create code that runs inside a users browser. The bookmarklet is a snippet of JavaScript code that runs when the user selects a bookmark (typically displayed in a bookmark bar for easy access, or via a window).

• http://marklets.com/
• http://betterexplained.com/articles/how-to-make-a-bookmarklet-for-your-web-application/