var headline_count;
var headline_interval;
var old_headline = 0;
var current_headline = 0;

$(document).ready(function(){
 headline_count = $("div.headline").size();
 $("div.headline:eq("+current_headline+")").css('top','10px');
 headline_interval = setInterval(headline_rotate,5000); //time in milliseconds
 $('#scrollup').hover(function() {
 clearInterval(headline_interval);
 }, function() {
 headline_interval = setInterval(headline_rotate,5000); //time in milliseconds
 headline_rotate();
 });
});

function headline_rotate() {
 current_headline = (old_headline + 1) % headline_count;
 $("div.headline:eq(" + old_headline + ")").animate({top: -145},"slow", function() {
 $(this).css('top','150px');
 });
 $("div.headline:eq(" + current_headline + ")").show().animate({top: 10},"slow");
 old_headline = current_headline;
}