function getBrowserWidth() {
    if (window.innerWidth) { return window.innerWidth; }
    else if (document.documentElement && document.documentElement.clientWidth != 0) { return document.documentElement.clientWidth; }
    else if (document.body) { return document.body.clientWidth; }
    return 0;
}
function getWindowHeight() {
    var windowHeight = 0;
    if (typeof (window.innerHeight) == 'number') {
        windowHeight = window.innerHeight;
    }
    else {
        if (document.documentElement && document.documentElement.clientHeight) {
            windowHeight = document.documentElement.clientHeight;
        }
        else {
            if (document.body && document.body.clientHeight) {
                windowHeight = document.body.clientHeight;
            }
        }
    }
    return windowHeight;
}