button1 = new Image();
  button1.src = "img/green_01.gif";
  button2 = new Image();
  button2.src = "img/szary_02.gif";
  button3 = new Image();
  button3.src = "img/main_okno_gora.gif";
  button4 = new Image();
  button4.src = "img/main_okno_lewa.gif";
  button5 = new Image();
  button5.src = "img/main_okno_lewa_dol.gif";
  button6 = new Image();
  button6.src = "img/main_okno_prawe_dol.gif";
  button7 = new Image();
  button7.src = "img/main_okno_dol.gif";
  button8 = new Image();
  button8.src = "img/main_okno_prawe_srodek.gif";