data->mOwningElement, data->mNotify);
data->mOwningElement, data->mNotify, data->mObserver);
InsertPendingSheet(void* aPendingData, void* aLoader){  PendingSheetData* data = (PendingSheetData*)aPendingData;  CSSLoaderImpl*  loader = (CSSLoaderImpl*)aLoader;  loader->InsertSheetInDoc(data->mSheet, data->mDocIndex,                            data->mOwningElement, data->mNotify);  delete data;  return PR_TRUE;}