void parseXML(String _doc){
  String doc = _doc;
  xml = new XMLElement(this, doc);
  
  //Retrieve runList from plusService
  //runList is the second child element of plusService, position = 1
  XMLElement runList = xml.getChild(1);
  int runCount = runList.getChildCount();
  //println(runCount); //print to the console
  
  for(int i=0; i<runCount; i++){
  
    XMLElement run = runList.getChild(i);
    int elementCount = run.getChildCount();
  
    id = run.getIntAttribute("id");
    workoutType = run.getStringAttribute("workoutType");
    //println("id:" + "\t" + id);
    //println("workoutType:" + "\t" + workoutType);
    
    //startTime
    int index = (Integer)runElements.get("startTime");
    XMLElement _startTime = run.getChild(index);
    startTime = _startTime.getContent();
    
    //Distance
    index = (Integer)runElements.get("distance");
    XMLElement _distance = run.getChild(index);
    distance = _distance.getContent();
    
    //Duration
    index = (Integer)runElements.get("duration");
    XMLElement _duration = run.getChild(index);
    duration = _duration.getContent();
    
    //Heartrate
    index = (Integer)runElements.get("heartrate");
    //This is a new nikeplus feature, so not all runs have this element
    if(elementCount>index){
      XMLElement _heartrate = run.getChild(index);
      XMLElement _heartrateAvg = _heartrate.getChild(0);
      XMLElement _heartrateMin = _heartrate.getChild(1);
      XMLElement _heartrateMax = _heartrate.getChild(2);
      String heartrateAvgString = _heartrateAvg.getContent();
      String heartrateMinString = _heartrateMin.getContent();
      String heartrateMaxString = _heartrateMax.getContent();
      heartrateAvg = Integer.parseInt(heartrateAvgString);
      heartrateMin = Integer.parseInt(heartrateMinString);
      heartrateMax = Integer.parseInt(heartrateMaxString);
    } else {
      heartrateAvg = -1;
      heartrateMin = -1;
      heartrateMax = -1;
    
    }
   Run newRun = new Run(id, startTime, distance, duration, heartrateAvg, heartrateMin, heartrateMax);
   //println(id+","+startTime+","+distance+","+duration+","+heartrateAvg+","+heartrateMin+","+heartrateMax);
   runs.add(newRun);
 }
}