var submenu01On = new Image();
var submenu01Off = new Image();
var submenu02On = new Image();
var submenu02Off = new Image();

submenu01On.src = root + "images/menu/parents/top/submenu-01-careerOn.gif";
submenu01Off.src = root + "images/menu/parents/top/submenu-01-careerOff.gif";
submenu02On.src = root + "images/menu/parents/top/submenu-02-officelocOn.gif";
submenu02Off.src = root + "images/menu/parents/top/submenu-02-officelocOff.gif";