I have been noticing a patters of posts where more and more people are claiming that Google is posting JavaScript forms. All of those posts, including this one, all have the same story. Basically, if you have a clean URL in the JavaScript, GoogleBot will try to explore that URL.
The same type of story spring up over the weekend at a WebmasterWorld thread. As you can tell by the thread, the JavaScript included some clean URLs, which GoogleBot extracted and explored.
Just be careful your JavaScript doesn't opening contain a method to delete your whole Web site.
Forum discussion at WebmasterWorld.

Comments:
Andrew
05/01/2006 03:06 pm
All of this can be avoided by using <a href="http://www.quirksmode.org/js/events_advanced.html">event listeners</a> rather than inline JavaScript.
Seven
11/03/2006 01:55 pm
i have a javascript that, if posted on other sites shows a picture that links to my site. does google index that link? or does it index the link to the script script...src="http://www.seven07.ws/seven07.js"...