(function (doc, win) {
    // Does browser support addEventListener?
    if (!doc.addEventListener) return;

    // Does browser support rem?
    var div = doc.createElement('div');
    div.setAttribute('style', 'font-size: 1rem');
    if (div.style.fontSize != "1rem") return;

    var html = doc.documentElement,
        recalc = function () {
            var clientWidth = html.clientWidth;
            if (!clientWidth) return;

            html.style.fontSize = ((clientWidth / 1000) * 75) + '%';
            html.clientWidth; // Force relayout - important to new Android devices
            html.style.display = "";
        };

    win.addEventListener('resize', recalc, false);
    doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);


document.addEventListener('DOMContentLoaded', function () {
}, false);