var SwapImg; SwapImg = new Array;

ImgPreload('h2', 'img_for_oracolor/headermenu2-1.jpg', 'img_for_oracolor/headermenu3-1.jpg');
ImgPreload('h3', 'img_for_oracolor/headermenu2-3.jpg', 'img_for_oracolor/headermenu3-2.jpg');
ImgPreload('h4', 'img_for_oracolor/headermenu2-4.jpg', 'img_for_oracolor/headermenu3-3.jpg');
ImgPreload('h5', 'img_for_oracolor/headermenu2-5.jpg', 'img_for_oracolor/headermenu3-4.jpg');
ImgPreload('h6', 'img_for_oracolor/headermenu2-6.jpg', 'img_for_oracolor/headermenu3-5.jpg');
ImgPreload('h7', 'img_for_oracolor/headermenu2-7.jpg', 'img_for_oracolor/headermenu3-6.jpg');
ImgPreload('h8', 'img_for_oracolor/headermenu2-8.jpg', 'img_for_oracolor/headermenu2-8.jpg');
ImgPreload('bc', 'img_for_oracolor/b_bc.gif', 'img_for_oracolor/b_bc_2.gif');
ImgPreload('vcd', 'img_for_oracolor/b_vcd.gif', 'img_for_oracolor/b_vcd_2.gif');
ImgPreload('vts', 'img_for_oracolor/b_vts.gif', 'img_for_oracolor/b_vts_2.gif');
ImgPreload('cho', 'img_for_oracolor/b_cho.gif', 'img_for_oracolor/b_cho_2.gif');
ImgPreload('gift', 'img_for_oracolor/b_gift.gif', 'img_for_oracolor/b_gift_2.gif');
ImgPreload('wp', 'img_for_oracolor/b_wp.gif', 'img_for_oracolor/b_wp_2.gif');
ImgPreload('coo', 'img_for_oracolor/b_coo.gif', 'img_for_oracolor/b_coo_2.gif');
ImgPreload('wa', 'img_for_oracolor/b_wa.gif', 'img_for_oracolor/b_wa_2.gif');
ImgPreload('wa2', 'img_for_oracolor/b_wa2.gif', 'img_for_oracolor/b_wa2_2.gif');
ImgPreload('sl', 'img_for_oracolor/b_sl.gif', 'img_for_oracolor/b_sl_2.gif');
ImgPreload('of', 'img_for_oracolor/b_of.gif', 'img_for_oracolor/b_of_2.gif');
ImgPreload('fax', 'img_for_oracolor/b_fax.gif', 'img_for_oracolor/b_fax_2.gif');
ImgPreload('po', 'img_for_oracolor/b_po.gif', 'img_for_oracolor/b_po_2.gif');
ImgPreload('payment', 'img_for_oracolor/b_payment.gif', 'img_for_oracolor/b_payment_2.gif');
ImgPreload('various', 'img_for_index/b_various.gif', 'img_for_index/b_various_2.gif');
ImgPreload('aboutus', 'img_for_oracolor/b_aboutus.gif', 'img_for_oracolor/b_aboutus_2.gif');
ImgPreload('navi', 'img_for_oracolor/b_navi.gif', 'img_for_oracolor/b_navi_2.gif');
ImgPreload('netlink', 'img_for_oracolor/b_netlink.gif', 'img_for_oracolor/b_netlink_2.gif');
ImgPreload('nayoro', 'img_for_oracolor/b_nayoro.gif', 'img_for_oracolor/b_nayoro_2.gif');
ImgPreload('sightseen', 'img_for_oracolor/b_sightseen.gif', 'img_for_oracolor/b_sightseen_2.gif');
ImgPreload('manager', 'img_for_oracolor/b_manager.gif', 'img_for_oracolor/b_manager_2.gif');
ImgPreload('vs', 'img_for_index/b_vs.gif', 'img_for_index/b_vs_2.gif');
ImgPreload('saiji', 'img_for_oracolor/b_saiji.gif', 'img_for_oracolor/b_saiji_2.gif');

function ImgPreload() {
	var N = ImgPreload.arguments[0];
	SwapImg[N] = new Image();
	SwapImg[N][0] = new Image();
	SwapImg[N][0].src = ImgPreload.arguments[1];
	SwapImg[N][1] = new Image();
	SwapImg[N][1].src = ImgPreload.arguments[2];
}

function ImgChange() {
	var ID = ImgChange.arguments[0];
	var N  = ImgChange.arguments[1];
	document.images[ID].src = SwapImg[ID][N].src;
}