: mDocViewer(nsnull), mPresContext(nsnull), mPrintOptions(nsnull), mDelay(0)
: mDocViewer(nsnull), mPresContext(nsnull), mPrintSettings(nsnull), mDelay(0)
  nsPagePrintTimer()      : mDocViewer(nsnull), mPresContext(nsnull), mPrintOptions(nsnull), mDelay(0)  {    NS_INIT_ISUPPORTS();  }