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

//    if (ww > 1340)
//        w = 1300;
//    else if (ww < 1024)
//        w = 800;
//    else

    if (ww > 900)
        w = 1000;
    else

        var w = document.documentElement.clientWidth;

    var h = parseInt((7 / 13) * w);

    document.getElementsByName('portfolio')[0].setAttribute('width', w);
    document.getElementsByName('portfolio')[0].setAttribute('height', h);
}
window.onload = resize;
window.onresize = resize;