if (textControlFrame) textControlFrame->SetSelectionStart(aSelectionStart);
if (textControlFrame) rv = textControlFrame->SetSelectionStart(aSelectionStart); }
nsHTMLTextAreaElement::SetSelectionStart(PRInt32 aSelectionStart){  nsCOMPtr<nsIFormControlFrame> formControlFrame = getter_AddRefs(GetFormControlFrame(PR_TRUE));  nsCOMPtr<nsITextControlFrame>    textControlFrame(do_QueryInterface(formControlFrame));  if (textControlFrame)    textControlFrame->SetSelectionStart(aSelectionStart);  return NS_OK;}