How to get screen resolution of visitor in javascript and/or php?

Question

I would like to know the screen resolution of a visitor visiting my page so I can properly make a jquery thickbox cover about 75% of their screen.

Solutions to the q

Answer 1

you can try this Window dimensions Hack and it speaks to ALL Browsers alike. (including dumb IE6)

var width = document.body.offsetWidth;
var bodyHeight = document.body.scrollHeight;
var height = (typeof window.innerHeight !== "undefined")? window.innerHeight :  (document.documentElement)? document.documentElement.clientHeight : document.body.clientHeight;
    height = (bodyHeight > height)? bodyHeight : height;