var margin = 0; // margin around the items.
var speed = 15; // milliseconds it will take for items to move 1 pixel.
var stopspeed = 5000; // milliseconds that the news item will stop for, example: 2000 : 2seconds.
var scroller;

function begin() {
    scroller = document.getElementById("scroller");
    if(scroller.hasChildNodes()) {
        for(var i = 0; i < scroller.childNodes.length; i++) {
            if(scroller.childNodes[i].nodeType == 1) {
                scroller.childNodes[i].style.margin = margin + 'px';
            } else if(scroller.childNodes[i].nodeType == 3) {
                scroller.removeChild(scroller.childNodes[i]);
                i--;
            }
        }
        setTimeout("count(" + margin + ")", stopspeed);
    }
}

function count(counter) {
    counter--;
    setTimeout("move(" + counter + ")", speed);
}

function move(counter) {
    scroller.firstChild.style.marginTop = counter + 'px';
    if(counter > -(scroller.firstChild.offsetHeight)) {
        count(counter);
    } else {
        setTimeout("stack(" + counter + ")", stopspeed);
    }
}

function stack(counter) {
    var thischild = scroller.firstChild;
    scroller.removeChild(thischild);
    scroller.appendChild(thischild);
    scroller.lastChild.style.margin = margin + 'px';
    count(margin);
}