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

$(document).ready(function(){
   headline_count = $("div.headline").size();
   $("div.headline:eq("+current_headline+")").css('top','3px'); 
   headline_interval = setInterval(headline_rotate,5000); //time in milliseconds
});
 
function headline_rotate() {
   current_headline = (old_headline + 1) % headline_count; 
   $("div.headline:eq(" + old_headline + ")").animate({top: -205},"slow", function() {
     $(this).css('top','675px');
   });
   $("div.headline:eq(" + current_headline + ")").show().animate({top: 3},"slow");  
   old_headline = current_headline;
}