SlideNote is a customizable, flexible jQuery plugin that makes it easy to display sliding notifications on your website or in your web application. For more information or to see a demo, scroll down. The plugin displays the contents of any URL and, optionally, it can display only the contents of an element inside that URL.
You can select the corner that it’ll slide from and use any image as the “close” button by mentioning the image source.
Requirements: jQuery
Compatibility: All Major Browsers
Website: http://slidenote.info/
Download: http://github.com/tommcfarlin/slidenote