function HideScrollbars() {
    var body = document.getElementsByTagName("body")[0];
    body.style.overflow = "hidden";

    var iframe = document.getElementById("iframeAccept");

    var height = window.innerHeight != null ? window.innerHeight : document.documentElement && document.documentElement.clientHeight;
    var agent = navigator.userAgent.toLowerCase();
    var is_iphone = ((agent.indexOf('iphone') != -1));
    var is_ipad = ((agent.indexOf('ipad') != -1));

    if (!(is_iphone || is_ipad)) {
        if (iframe != null) {
            iframe.height = height - 360;
            $('#dialog_terms_accept').dialog("option", "height", height - 300);
            $('#dialog_terms_accept').dialog('option', 'position', 'center');
        }
    }
    else {
        iframe.height = 570;
        $('#dialog_terms_accept').dialog("option", "height", 630);
        $('#dialog_terms_accept').dialog('option', 'position', 'center');
    }

    var iframe2 = document.getElementById("onlineCourse");

    //var height = window.innerHeight != null ? window.innerHeight : document.documentElement && document.documentElement.clientHeight;
    if (iframe2 != null) {
        iframe2.height = 500;
    }
}




function ShowScrollbars() {
    var body = document.getElementsByTagName("body")[0];
    body.style.overflow = "visible";
}