// plik zawiera JavaScript obslugujacy strzalki wskazujace wybrany element menu

if (document.images) {
      	btnSec_bon = new Image
      	btnFirst_bon = new Image
      	btnSec_bon.src = 'images/btn_produkty_bonasus_s.gif' 
      	btnFirst_bon.src = 'images/btn_produkty_bonasus_n.gif'
      	btnSec_sen = new Image
      	btnFirst_sen = new Image
      	btnSec_sen.src = 'images/btn_produkty_sensorprel_s.gif' 
      	btnFirst_sen.src = 'images/btn_produkty_sensorprel_n.gif'

	   }