function load_menuimg() { 
MM_preloadImages('/contents/common/menu_top_on.gif','/contents/common/menu_product_on.gif','/contents/calculator/common/menu_selector_on.gif','/contents/calculator/common/menu_features_on.gif','/contents/calculator/common/menu_support_on.gif','/contents/common/menu_faqs_on.gif')
}