Darn spellchecker! Try again...
It's HTTP_REFERER!
<textarea name="testing" id="testing" cols="45" rows="5"><?php echo((isset($_SERVER['HTTP_REFERER']))?$_SERVER['HTTP_REFERER']:""); ?>
</textarea>
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.