void updateScroll(){
		bool vBar = _scrollBar && _scrollBar->isVisible(),
			vNode = _scrollNode && _scrollNode->isVisible();
		if(!vBar || !vNode){
			return;
		}
		bool vert = getDirection() == kCCScrollViewDirectionVertical;
		CCPoint p, cp = getContentOffset();
		CCSize vs = getViewSize(),
			cs = getContentSize();
		float rate = 1 - (vert? fabsf(cp.y) / (cs.height - vs.height) : fabsf(cp.x) / (cs.width - vs.width));
		if(vBar){
			CCSize ss = _scrollBar->getPreferredSize();
			p = _scrollBar->getPosition();
			if(vert){	p.y = cs.height - (cs.height - ss.height) * rate - ss.height - _scrollTrackDelta;
			}else{		p.x = cs.width - (cs.width - ss.width) * rate - ss.width - _scrollTrackDelta;
			}
			_scrollBar->setPosition(p);
		}
		if(vNode){
			p = _scrollNode->getPosition();
			if(vert){	p.y = cp.y + vs.height * rate;
			}else{		p.x = cp.x + vs.width * rate;
			}
			_scrollNode->setPosition(p);
		}
		if(_scrollTrack){
			p = _scrollTrack->getPosition();
			if(vert){	p.y = fabsf(cp.y);
			}else{		p.x = fabsf(cp.x);
			}
			_scrollTrack->setPosition(p);
		}
//CCLog("LuaTableView.updateScroll ss=%d,%d vh=%d cy=%d ch=%d y=%d", (int)ss.width, (int)ss.height, (int)vs.height, (int)p.y, (int)cs.height, (int)_scrollBar->getPositionY());
	}