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) {header_menu_01_ImageMap_01_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_01.gif");
header_menu_01_ImageMap_02_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_02.gif");
header_menu_01_ImageMap_03_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_03.gif");
header_menu_01_ImageMap_04_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_04.gif");
header_menu_01_ImageMap_05_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_05.gif");
header_menu_01_ImageMap_06_over = newImage("http://www.alps-filter.co.jp/japanese/images/header-menu-ImageMap_06.gif");preloadFlag = true;}}