dojo.require('dojo.fx');
function scroll(num) {
    window.current = num;
    var anim1 = dojo.animateProperty({ node: "portfolio-wrapper", properties: { opacity: 0.2 }, duration: 100});
    var anim2 = dojo.animateProperty({ node: "portfolio", properties: { marginLeft: -((num-1)*403) }, duration: 600});
    var anim3 = dojo.animateProperty({ node: "portfolio-wrapper", properties: { opacity: 1 }, duration: 100});
    dojo.fx.chain([anim1, anim2, anim3]).play();
    setDescription(num);
}

function setDescription(num) {
    dojo.byId('photoDescription').innerHTML = descriptions[num] || 'Geen';
}