var timeout=6000;

function slice(nr,maxnr) {
    var s1,s2;
    s1=$('slice').childElements()[nr]
    nr+=+1;
    if  (nr==maxnr) nr=0
    s2=$('slice').childElements()[nr]
    s2.setStyle({'zIndex': '100'});
    s1.setStyle({'zIndex': '150'});
    s2.show();
    s1.fade();
    window.setTimeout("slice("+nr+","+maxnr+");",timeout);
    
}

function initSlice(){
    if ($('slice')) {
        var maxnr=$('slice').childElements().size();
        if (maxnr >1)
        {
            var startnr=maxnr-1;
            window.setTimeout(function(){slice(startnr,maxnr)},timeout);
        }
    }
}