if (document.images) { // képek előredefiniálása
	Image1= new Image(198,623);
	Image1.src = "../images/bg_contact.png";
	Image2= new Image(706,614);
	Image2.src = "../images/bg_menu.png";
	Image3= new Image(326,623);
	Image3.src = "../images/bg_menu1_geppark.png";
	Image4= new Image(326,623);
	Image4.src = "../images/bg_menu1_magunkrol.png";
	Image5= new Image(326,623);
	Image5.src = "../images/bg_menu1_termekek.png";
	Image6= new Image(427,623);
	Image6.src = "../images/bg_menu2_arajanlat.png";
	Image7= new Image(427,623);
	Image7.src = "../images/bg_menu2_letoltesek.png";
	Image8= new Image(427,623);
	Image8.src = "../images/bg_menu2_kapcsolat.png";	
}