button2up=new Image(325,51);
button2up.src="images/domar_architektura1.jpg";
button2down=new Image(325,51);
button2down.src="images/domar_architektura.jpg";

button1up=new Image(325,51);
button1up.src="images/domar_budownictwo1.jpg";
button1down=new Image(325,51);
button1down.src="images/domar_budownictwo.jpg";