window.addEvent('domready',function() {
var co = 0;

$('scrolldown').addEvent('click', function () {
    co = co + 1;
    var nem = $('scroll').get('name');
    var dif = nem - 8;
    if(nem > 8) {
    var muv = new Fx.Scroll('over', {duration: 100, fps: 60}).start(0, 25 * co);
    if(co > dif) {co = dif;}
    }
});



$('scrollup').addEvent('click', function () {

    co = co - 1;
    var nem = $('scroll').get('name');
    var dif = nem - 8;
    if(nem > 8) {
    var muv = new Fx.Scroll('over', {duration: 100, fps: 60}).start(0, 25 * co);
    if(co < 1) {co = 0;}
    }

});

});