1. design your pages with a 800*600 ratio

2. generate dynamic pages based on javascript

screen.width- the X dimensions of the screen
screen.height- the Y dimensions of the screen
screen.availWidth - the X dimensions of the screen less OS interface elements
screen.availHeight - the Y dimensions of the screen less OS interface elements
screen.colorDepth - in bits e.g. for 16bit display the value of colorDepth is 16