This version uses jQuery which I use on a lot of projects.
The simplest use without downloading anything is this.
Before your closing head tag,
| 1 | </head> | 
Add
| 1 2 3 4 5 6 7 8 9 | <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js" type="text/javascript"></script> $(document).ready(function(){ 	//new window method for external links 	$('a.external').click(function(){ 		window.open(this.href); 		return false; 	}); }); | 
To make a link open in a new tab, just add class=”external” to the link.
Example
| 1 | <a class="external" href="http://your_url.com/">Link</a> | 
New links with that class will now open in a new browser window or tab and be XHTML strict compliant.
Example link
