It is almost impossible to prevent a knowledgeable user from viewing the URL of a page, but you can at least prevent casual users from easily finding out this information. An easy first step is to include your application in a frame. Browsers always keep the address of the original frameset page in the location bar and don't display the address of individual frames. If you don't like a framed interface, you can simply create a frameset with a single frame covering the whole window.
Of course users can always right click in a frame to view the frame properties, including the URL. Also, passing the mouse cursor over a link, usually displays the target URL in the status bar.
Here are some techniques you can use to make it even harder for users to find the URL of your application:
Sent by Joe Goldsmith on 07/06/2002 08:41:03 PM:
Is there a way to hide the URL in the address bar so users do not know what page they are on?