rys1on = new Image();
        rys1on.src = "img/index2.gif";
        rys1off = new Image();
        rys1off.src = "img/index.gif";

        rys2on = new Image();
        rys2on.src = "img/o_firmie2.gif";
        rys2off = new Image();
        rys2off.src = "img/o_firmie.gif";
		
		rys3on = new Image();
        rys3on.src = "img/oferta2.gif";
        rys3off = new Image();
        rys3off.src = "img/oferta.gif";
		
		rys4on = new Image();
        rys4on.src = "img/galeria2.gif";
        rys4off = new Image();
        rys4off.src = "img/galeria.gif";
		
		rys5on = new Image();
        rys5on.src = "img/kontakt2.gif";
        rys5off = new Image();
        rys5off.src = "img/kontakt.gif";
		
        function zmien1(imgName)
        {
                imgOn = eval(imgName + "on.src");
                document [imgName].src = imgOn;
        }


        function zmien2(imgName)
        {
                imgOff = eval(imgName + "off.src")
                document [imgName].src = imgOff;
        }