function openScreen(game, num) {
    screendiv = document.getElementById("screenshot");
    screenimg = document.getElementById("screen");
    //viddiv = document.getElementById("vid");
    screenimg.src = "images/screens/" + game + "/" + num + ".jpg";
    //viddiv.style.display = 'none';
    screendiv.style.display = 'block';
    if (window.scrollY > 0) screendiv.style.top = window.scrollY + "px";
    if (window.pageYOffset > 0) screendiv.style.top = window.pageYOffset + "px";
}

function closeScreen() {
    screendiv = document.getElementById("screenshot");
    //viddiv = document.getElementById("vid");
    screendiv.style.display = 'none';
    //viddiv.style.display = 'block';
}