I'm not sure if there is the same implementation for the Sensation, but with my Nexus, you can enable full screen mode and quick controls. In the settings for the browser, click on Labs and then check off those two boxes. When your finger glides over the far right side of the browser, some controls will come up allowing you to switch tabs, enter a new URL etc. Again, I'm not positive if it is the same, but I think it's what you're looking for. Failing that, check out Dolphin or Chrome browsers.