function DetectWidth() {
    if (!isNaN(document.body.clientWidth))
        return document.body.clientWidth;
    else
        if (!isNaN(window.innerWidth))
        return window.innerWidth;
    else
        if (!isNaN(document.documentElement.clientWidth))
        return document.documentElement.clientWidth;
    else
        return 0;
}

function DetectHeight() {
    if (!isNaN(document.body.clientHeight))
        return document.body.clientHeight;
    else
        if (!isNaN(window.innerHeight))
        return window.innerHeight;
    else
        if (!isNaN(document.documentElement.clientHeight))
        return document.documentElement.clientHeight;
    else
        return 0;
}