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('display', 'block');


        headline_interval = setInterval(headline_rotate,4000);

        $('#scrollup').hover(function() {

          clearInterval(headline_interval);
          $('.mainosnappi').css('background-position','right');

        }, function() {

          headline_interval = setInterval(headline_rotate,4000);
          headline_rotate();
          $('.mainosnappi').css('background-position','left');
 });
});


function headline_rotate() {
  current_headline = (old_headline + 1) % headline_count;
  $("div.headline:eq(" + old_headline + ")")
    .fadeOut("slow");
    
  $("div.headline:eq(" + current_headline + ")")
    .fadeIn("slow");  
  old_headline = current_headline;
}