var tl;
function onLoad() {
  var eventSource = new Timeline.DefaultEventSource();
  var date = "Thu Dec 14 2005 00:00:00 GMT-0800";
  var bandInfos = [
    Timeline.createBandInfo({
      eventSource:    eventSource,
	  date:           date,
      width:          "70%", 
      intervalUnit:   Timeline.DateTime.MONTH, 
      intervalPixels: 100
    }),
    Timeline.createBandInfo({
      showEventText:  false,
	  trackHeight:    0.5,
	  trackGap:       0.2,
	  eventSource:    eventSource,
	  date:           date,
      width:          "30%", 
      intervalUnit:   Timeline.DateTime.YEAR, 
      intervalPixels: 400
    })
  ];
  bandInfos[1].syncWith = 0;
  bandInfos[1].highlight = true;
  bandInfos[1].eventPainter.setLayout(bandInfos[0].eventPainter.getLayout());

  tl = Timeline.create(document.getElementById("tl"), bandInfos, Timeline.HORIZONTAL);
  Timeline.loadXML("youtube.xml", function(xml, url) { eventSource.loadXML(xml, url); });
}

var resizeTimerID = null;
function onResize() {
    if (resizeTimerID == null) {
        resizeTimerID = window.setTimeout(function() {
            resizeTimerID = null;
            tl.layout();
        }, 500);
    }
}