var r = 104;
  var deg = 0;
  var conv = (2 * Math.PI)/360;
  function rotate() {
    var x = r + r * Math.cos(deg * conv);
    var y = r + r * Math.sin(deg * conv);
    deg += 10;
    if (deg == 360) deg = 0;
    lader.filters[0].moveLight(1,x,y,0,1);
    timerID = setTimeout('rotate()',100);
  }
  function init() {
    lader.filters.light.addCone(104,104,200,104,104,255,255,255,100,200);
    lader.filters.light.addCone(144,104,0,0,0,0,0,255,100,20);
    rotate();
  }