//MOOTOOLS 1.21

var scroll;
var counter;
var count;
var items;

function setScroll(id, it, len)
{
    if ( $('scroll_'+id) == null ) return;
    if ( $('scroll_content_'+id) == null ) return;

    counter = 0;
    items = it;
    count = $$("#scroll_"+id+" .item").length;    

    if (len != 0)
        $('scroll_content_'+id).setStyle('width', (len*count)+'px')

    scroll = new Fx.Scroll('scroll_'+id);
}

function scrollNext(id)
{
    counter++;

    if ( counter >= count )
        counter = 0;
   
    scroll.toElement('item_'+id+'_'+counter);
}