@Override
	public Boolean needScrolling(ViewEventArgs args){		
		Boolean needScrolling = false;
		int totalHeight = 0;
		for (Row row : this.document.getRows()){
			totalHeight += row.getHeight();
		}
		
		if (totalHeight > args.getFrameHeight()){
			needScrolling = true;
		}
		
		return needScrolling;
	}