NS_RELEASE(mURL); NS_IF_RELEASE(mFirstChild); NS_IF_RELEASE(mRules); NS_IF_RELEASE(mNext);
CSSStyleSheetImpl::~CSSStyleSheetImpl(){  NS_RELEASE(mURL);  NS_IF_RELEASE(mFirstChild);  NS_IF_RELEASE(mRules);  NS_IF_RELEASE(mNext);}