Rated 3 out of 5 stars

You can get the same effect with this bookmark: javascript:window.resizeTo(800,600)
The dimensions for the canvas size are different on each browser, but the following are safe: 1024x768=1004x597, 1280x1024=1260x853, 1600x1200=1580x1129, 640x480=620x309, 800x600=780x429