Change URL in Address Bar

Hey guys, I know I’ve seen a website with these before. The flash website didn’t reload. Would someone please help refresh my memory?

Say you click on a Flash button on the Flash website and url changes say bookmarks: http://mysite.com/?act=bookmarks or page 8 of the news: http://mysite.com/?act=news&page=8

Then when you bookmark it and revisit, it processes the url like PHP would and goes to the appropriate page.

Thanks in advance,
[URL=“http://mysite.com/?act=news&page=8”]