function showcat()
{
document.getElementById('sel_lijst').style.visibility= 'visible';
}

function closecat()
{
document.getElementById('sel_lijst').style.visibility= 'hidden';
}

function changegame(cat, rating, img, link, url)
{document.getElementById(cat + '_rating').src = 'img/rating/' + rating + '.gif';
document.getElementById(cat + '_naam').innerHTML = link;
document.getElementById(cat + '_img').src = img;
document.getElementById(cat + '_url').href = url;}