image1 = new Image();
image1.src = "images/menu_strona_glowna_on.gif";

image2 = new Image();
image2.src = "images/menu_oferta_on.gif";

image3 = new Image();
image3.src = "images/menu_informacje_on.gif";

image4 = new Image();
image4.src = "images/menu_klienci_on.gif";

image5 = new Image();
image5.src = "images/menu_kontakt_on.gif";