if (mState == Collapsed) return NS_OK;
nsSplitterFrameImpl::MouseMove(nsIDOMEvent* aMouseEvent){    //printf("Mouse move\n");  if (!mPressed)      return NS_OK;    if (IsMouseCaptured())    return NS_OK;  if (mState == Collapsed)     return NS_OK;  mSplitter->mContent->SetAttribute(kNameSpaceID_None, nsXULAtoms::state, "dragging", PR_TRUE);  RemoveListener();  CaptureMouse(PR_TRUE);  return NS_OK;}