If one tries to watch a video on the <http://zdnet.com.com> news site with Opera, one first has to choose a player and connection type. Then, when one clicks the radio button the site opens a popup window and proudly displays a "404 not found" error.
env_settings() detects Opera, sets object property "other" to true.
The function setCookie is the one that does the heavy lifting when you click a radio button. It sets a cookie to remember your choice, then calls launchPlayList() if "other" is true. This function constructs an URL to open .. which is the address that returns 404. A carefully prepared journey to nothing..