if(navigator.appVersion.charAt(0) >= "3")
{

// header_menu
(new Image()).src = "/common/menu_ws004sh_on.gif";
(new Image()).src = "/common/menu_ws007sh_on.gif";
(new Image()).src = "/common/header_m5_on.gif";

// navi_menu
(new Image()).src = "/common/nav_top_on.gif";
(new Image()).src = "/common/nav_qa_on.gif";
(new Image()).src = "/common/nav_dl_on.gif";
(new Image()).src = "/common/nav_manual_on.gif";
(new Image()).src = "/common/nav_periphe_on.gif";
(new Image()).src = "/common/nav_contact_on.gif";

}