var subnav_about_off = new Image();
subnav_about_off.src = '../images/subnav_about_overview_off.gif';
var subnav_about_over = new Image();
subnav_about_over.src = '../images/subnav_about_overview_on.gif';

var subnav_about_services_off = new Image();
subnav_about_services_off.src = '../images/subnav_about_services_off.gif';
var subnav_about_services_over = new Image();
subnav_about_services_over.src = '../images/subnav_about_services_on.gif';

var subnav_about_different_off = new Image();
subnav_about_different_off.src = '../images/subnav_about_different_off.gif';
var subnav_about_different_over = new Image();
subnav_about_different_over.src = '../images/subnav_about_different_on.gif';

var subnav_about_people_off = new Image();
subnav_about_people_off.src = '../images/subnav_about_people_off.gif';
var subnav_about_people_over = new Image();
subnav_about_people_over.src = '../images/subnav_about_people_on.gif';

var subnav_about_faq_off = new Image();
subnav_about_faq_off.src = '../images/subnav_about_faq_off.gif';
var subnav_about_faq_over = new Image();
subnav_about_faq_over.src = '../images/subnav_about_faq_on.gif';