var headline_count;
var current_headline=0;
var headline_interval;

$(document).ready(function(){
    headline_count = $("div.headline").size();
    $("div.headline:eq("+current_headline+")").css('top', '5px');
    headline_rotate_start(); //time in milliseconds
});

function headline_rotate_stop() {
    clearInterval(headline_interval);
}

function headline_rotate_start() {
    headline_interval = setInterval(headline_rotate,5000);
}

function headline_rotate() {
    old_headline = current_headline % headline_count;
    new_headline = ++current_headline % headline_count;
    $("div.headline:eq(" + old_headline + ")").css('top', '210px');
    $("div.headline:eq(" + new_headline + ")").show().animate({
        top: 5
    },"slow");
}