function resize()
{
    if (navigator.appName.indexOf("Microsoft")!=-1)
        var ww = document.body.offsetWidth;
    else
        var ww = window.innerWidth;

    if (ww > 1680)
        w = 1660;
    else if (ww < 1024)
        w = 1000;
    else
        var w = document.documentElement.clientWidth;

    var h = parseInt((4 / 7) * w);

    document.getElementById('wrapper').setAttribute('width', w);
    document.getElementById('wrapper').setAttribute('height', h);
}
window.onload = resize;
window.onresize = resize;