NS_INIT_ISUPPORTS();
HTMLStyleSheetImpl::HTMLStyleSheetImpl(void)  : nsIHTMLStyleSheet(),    mRefCnt(0),    mURL(nsnull),    mDocument(nsnull),    mLinkRule(nsnull),    mVisitedRule(nsnull),    mActiveRule(nsnull),    mDocumentColorRule(nsnull){  NS_INIT_ISUPPORTS();  mMappedAttrTable.ops = nsnull;}