var cnt=10;
var timer=null;

function update() {
}

function tick() {
  var countdown=element("countdown");
  cnt--;
  if(countdown) {
    if(cnt>0) countdown.innerHTML="Updating in "+cnt+" seconds..."
    else {
      countdown.innerHTML="Updating now!"
      clearInterval(timer);
      camsect=element("webcamsection")
      if(camsect) {
        camsect.updatecheck=starttimer;
        replace_element(camsect,document.baseURI+"?webcamsection");
      }
    }
  }
}

function starttimer() {
  cnt=31;
  tick();
  timer=setInterval(tick,1000);
}

function initupdate() {
  starttimer();
}