Internet Explorer 4x has several undocumented JavaScript 1.1 commands to resize your browser. Just type one of these commands in the Address/Location URL box:
javascript:resizeTo(640,480); javascript:resizeTo(800,600); javascript:resizeTo(1024,768); javascript:resizeTo(1152,874); javascript:resizeTo(1200,1024); javascript:resizeTo(1600,1200); javascript:resizeTo(1792,1344); javascript:resizeTo(1800,1400); javascript:resizeTo(1972,1600);
Now just hit Enter to see the effect. Note: you can only use the screen resolutions supported by both your video card controller and monitor.