_scrollView.contentOffset = CGPointZero;
_scrollView.frame = CGRectMake(0, 0,
_scrollView.contentSize.width,
_scrollView.contentSize.height);
//_scrollView.contentOffset = CGPointZero; // Don't change the offset
_scrollView.frame = CGRectMake(0, 0,
_scrollView.contentSize.width,
_scrollView.contentSize.height - _scrollView.contentOffset);