var TB_DOWNLOADS = 121594530;
 var TB_CHANGE = 1.05163;
 var TB_RUNS = 0;

 setInterval(update_thunderbird_download,1000);

 function update_thunderbird_download(){
  var thunderbird_box = document.getElementById('thunderbird-downloads');
  if(thunderbird_box){
   thunderbird_box.innerHTML = Math.round(TB_DOWNLOADS + (TB_CHANGE*TB_RUNS));
  }
  TB_RUNS++;
 }

 update_thunderbird_download();