Unity Webplayer, Javascript, HTMLDOM

OK, I am to a point where I need to ask if Unity can access HTMLDOM or Javascript from within the web player. I want to create a file viewer and i want the web player to access, if not monitor a Javascript variable or HTMLDOM object. (like a hidden field)

is this possible?

Yes, it is possible. Have a look at:
http://unity3d.com/support/documentation/Manual/Unity%20Web%20Player%20and%20browser%20communication.html