if (styleSheet == null) styleSheet = new StyleSheet[] {ss}; else System.arraycopy(new StyleSheet[] {ss}, 0, styleSheet, styleSheet.length, 1);
if (linked == null) linked = new ArrayList(); linked.add(ss);
  public void addStyleSheet(StyleSheet ss)  {    if (styleSheet == null)      styleSheet = new StyleSheet[] {ss};    else      System.arraycopy(new StyleSheet[] {ss}, 0, styleSheet,                        styleSheet.length, 1);  }