var headline_count = 20;
 var headline_interval;
 var old_headline = 0;
 var current_headline = 0;
var cacheTime = new Date().getTime();
$(document).ready(function(){
     $("div.headline:eq(0)").show().animate({top: 0},"slow");  
    headline_interval = setInterval(headline_rotate,3000); //time in milliseconds
   $('#scrollup').hover(function() {
     clearInterval(headline_interval);
   }, function() {
     headline_interval = setInterval(headline_rotate,3000); //time in milliseconds
   });
});

function headline_rotate() {
   current_headline = (old_headline + 1) % headline_count; 
   $("div.headline:eq(" + old_headline + ")").animate({top: -55},"slow", function() {$(this).css('top','55px'); });
   $("div.headline:eq(" + current_headline + ")").show().animate({top: 0},"slow");  
   old_headline = current_headline;
 }