I thought this would be easy, but turns out it's not. I need to set the Firefox viewport size to a given value (larger than my screen resolution). What I want is not to enlarge the application window, ...
I have DG43NB mobo, that have onboard X4500 graphics. Its supports 1900 x 1200 Resolution. But my LCD monitor is only capable of resolution 1024 x 768. I have to test some websites in resolution 1900 ...