var headline_count;
     var headline_interval;
     var old_headline = 0;
     var current_headline = 0;
     
     $(document).ready(function(){
       headline_count = $("div.alerte").size();
       
       $("div.alerte:eq("+current_headline+")").css('top','5px');              
       if ( headline_count > 1 ) {
       $("div.alerte:eq("+current_headline+")").css('top','5px');                
       headline_interval = setInterval(headline_rotate,7000); //time in milliseconds       
       $('#alerte').hover(function() {
         clearInterval(headline_interval);
       }, function() {          
         headline_interval = setInterval(headline_rotate,7000); //time in milliseconds                 
            headline_rotate();
         }
       );
      }
     });     
     function headline_rotate() {
       current_headline = (old_headline + 1) % headline_count; 
       $("div.alerte:eq(" + old_headline + ")").animate({top: -205},5000, function() {
         $(this).css('top','210px');
       });
       $("div.alerte:eq(" + current_headline + ")").show().animate({top: 5},3000);  
       old_headline = current_headline;
     }