jQuery A+ is an unobtrusive script that adds useful features to 'A' tags allowing webpages to maintain compatibility with HTML standards. The script syntax is compatible with all HTML / XHTML standards.
For example, you can open link in a new window/tab (like target="_blank") without invalidating the HTML code:
<a href="index.htm" class="blank">Click Me</a>
<a href="index.htm" class="win win-center">Click Me</a>
This plugin requires jQuery 1.5.0 and above to work. Tested on Internet Explorer 6/7/8, Firefox, Safari, Opera, and Chrome.