function getViewportDimensions() {
    var heightValue = 0;
    var widthValue = 0;

    if (window.innerHeight) {
        heightValue = window.innerHeight;
        widthValue = window.innerWidth;
    }
    else if ((document.documentElement) && (document.documentElement.clientHeight)) {
        heightValue = document.documentElement.clientHeight;
        widthValue = document.documentElement.clientWidth;
    }
    else if ((document.body) && (document.body.clientHeight)) {
        heightValue = document.body.clientHeight;
        widthValue = document.body.clientWidth;
    }

    return { Height: parseInt(heightValue, 10), Width: parseInt(widthValue, 10) }
}