Gesture inputs for a portable display device

1. A method of controlling displays on first and second display screens of a handheld display device configured for web browsing, the method comprising:

detecting a gesture supplied to a touch-sensitive surface of the handheld display device while first web-based content is displayed on the first display screen and different, second web-based content is displayed on the second display screen, the gesture being formed by touching and then sliding on the touch-sensitive surface; and

interchanging the web-based display contents of the first and second display screens based on the gesture so that the second web-based content is displayed on the first display screen and the first web-based content is displayed on the second screen.

2. The method according to claim 1 , wherein the gesture comprises touching the touch-sensitive surface and then sliding on the touch-sensitive surface in a first direction and then in a second direction.

3. The method according to claim 1 , wherein the touch-sensitive surface is part of one of the first and second display screens.

4. The method according to claim 1 , wherein the first and second display screens are physically different display screens.

5. The method according to claim 1 , wherein the first and second display screens are different portions of the same physical display screen.

6. A non-transitory computer-readable medium storing program instructions executable by a processor of a handheld display device configured for web browsing to control web-based displays on first and second display screens of the handheld display device by:

detecting a gesture supplied to a touch-sensitive surface of the handheld display device while first web-based content is displayed on the first display screen and different, second web-based content is displayed on the second display screen, the gesture being formed by touching and then sliding on the touch-sensitive surface; and

interchanging the web-based display contents of the first and second display screens based on the gesture so that the second web-based content is displayed on the first display screen and the first web-based content is displayed on the second screen.

7. The computer-readable medium according to claim 6 , wherein the gesture comprises touching the touch-sensitive surface and then sliding on the touch-sensitive surface in a first direction and then in a second direction.

8. The computer-readable medium according to claim 6 , wherein the first and second display screens are physically different display screens.

9. The computer-readable medium according to claim 6 , wherein the first and second display screens are different portions of the same physical display screen.

10. A handheld image display device, comprising: a first body which incorporates a touch-sensitive first display screen on a face thereof; a second body which is movable relative to the first body and incorporates a second display screen on a face thereof; an image processing system for simultaneously generating image content for display on the first and second display screens; communication circuitry configured for internet communications; memory; and a program, wherein the program is stored in the memory and configured to be executed by the image processing system, the program including instructions for: detecting a gesture supplied to the touch-sensitive first display screen while first web-based content is displayed on the first display screen and different, second web-based content is displayed on the second display screen, the gesture being formed by touching and then sliding on the first display screen; and interchanging the web-based contents of the first and second display screens based on the gesture so that the second web-based content is displayed on the first display screen and the first web-based content is displayed on the second screen.