code: public void calcScale(int zoomFactor){
  
  		float s = getScaleForZoom(zoomFactor);
  		scale = s;
  		//logger.info("calc scale zoom:"+zoomFactor+ " s: " + s);
  		panel1.setScale(s);
  		panel2.setScale(s);
  		panel1.repaint();
  		panel2.repaint();
  
  
  		//return scale;
  
  	}
docs: a value of 100 means that the whole sequence should be displayed in the current visible window
  a factor of 1 means that one amino acid shoud be drawn as big as possible
  
  @param zoomFactor - a value between 1 and 100