can someone tell me why my onclick javascript (in link tag) isn't working? i used the same code in a flash getURL command and it worked fine but not in this html link:

Code:
<div id="about">
<h1>ABOUT</h1>
<div id="rightside">
	<img src="images/about_crop" />
</div>
<p>one paragraph</p>
<p>click <a href="#" onclick="document.getElementByID('about')style.display='none';" onfocus="this.blur();">here</a> to make this text disappear.</p>
</div>