protected void setAttribute(String name, String attName, String attValue) {
   Element elt = getElement(name);
   if (elt == null) {
     elt = doc.createElement(name);
     docElt.appendChild(elt);
   }
   elt.setAttribute(attName, attValue);
 }
 private void create() {
   try {
     tracks = new Vector();
     hash = new Hashtable();
     createDOM();
     doc = db.newDocument();
     docElt = doc.createElement(docElementName);
     doc.appendChild(docElt);
   } catch (Exception e) {
     e.printStackTrace();
   }
 }