function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		navi_m01_over = newImage("../img/mk_navi_m01_over.jpg");
		navi_m02_over = newImage("../img/mk_navi_m02_over.jpg");
		navi_m03_over = newImage("../img/mk_navi_m03_over.jpg");
		navi_m04_over = newImage("../img/mk_navi_m04_over.jpg");
		navi_m05_over = newImage("../img/mk_navi_m05_over.jpg");
		bt_home_over = newImage("../img/bt_home_over.jpg");
		bt_sitemap_over = newImage("../img/bt_sitemap_over.jpg");
		bt_guide_over = newImage("../img/bt_guide_over.jpg");
		bt_privacy_over = newImage("../img/bt_privacy_over.jpg");
		bt_profile_over = newImage("../../company/images/bt_profile_over.gif");
		bt_map_over = newImage("../../company/images/bt_map_over.gif");
		sitemap_m01_over = newImage("../../images/sitemap_m01_over.gif");
		sitemap_m02_over = newImage("../../images/sitemap_m02_over.gif");
		sitemap_m03_over = newImage("../../images/sitemap_m03_over.gif");
		sitemap_m04_over = newImage("../../images/sitemap_m04_over.gif");
		sitemap_m05_over = newImage("../../images/sitemap_m05_over.gif");
		sitemap_m06_over = newImage("../../images/sitemap_m06_over.gif");
		sitemap_m07_over = newImage("../../images/sitemap_m07_over.gif");
		sitemap_m08_over = newImage("../../images/sitemap_m08_over.gif");
		preloadFlag = true;
	}
}