// JavaScript Document
window.onresize = alertSize;
window.onload = alertSize;

if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", alertSize, false);
}

function alertSize() {
    var myWidth = 0, myHeight = 0;
    if (typeof (window.innerWidth) == 'number') {
        //Non-IE
        myWidth = window.innerWidth;
        myHeight = window.innerHeight;
    } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
        //IE 6+ in 'standards compliant mode'
        myWidth = document.documentElement.clientWidth;
        myHeight = document.documentElement.clientHeight;
    } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
        //IE 4 compatible
        myWidth = document.body.clientWidth;
        myHeight = document.body.clientHeight;
    }
    sizeHandler(myWidth);
}

    function sizeHandler(myWidth) {
        if (myWidth > 960)
            document.documentElement.style.overflowX = 'hidden';
        else
            document.documentElement.style.overflowX = 'auto';
    }