get size of screen (js)

scripts.js

trasweb = trasweb | {};

trasweb.getSize = function () {
    var w = window,
        d = document,
        e = d.documentElement,
        g = d.getElementsByTagName('body')[0],
        x = w.innerWidth || e.clientWidth || g.clientWidth,
        y = w.innerHeight || e.clientHeight || g.clientHeight;

    return {"x": x, "y": y};
};