if(document.images){
	var bn_imgs_on = new Object();
	bn_imgs_on['broadcast'] = new Image();
	bn_imgs_on['broadcast'].src = '/weta/twoschools/global/images/bn_broadcast_on.gif';
	bn_imgs_on['order'] = new Image();
	bn_imgs_on['order'].src = '/weta/twoschools/global/images/bn_order_on.gif';
	bn_imgs_on['tell_a_friend'] = new Image();
	bn_imgs_on['tell_a_friend'].src = '/weta/twoschools/global/images/bn_tell_a_friend_on.gif';
	bn_imgs_on['feedback'] = new Image();
	bn_imgs_on['feedback'].src = '/weta/twoschools/global/images/bn_feedback_on.gif';
	bn_imgs_on['about_rr'] = new Image();
	bn_imgs_on['about_rr'].src = '/weta/twoschools/global/images/bn_about_rr_on.gif';
	bn_imgs_on['site_map'] = new Image();
	bn_imgs_on['site_map'].src = '/weta/twoschools/global/images/bn_site_map_on.gif';
	bn_imgs_on['resources'] = new Image();
	bn_imgs_on['resources'].src = '/weta/twoschools/global/images/bn_resources_on.gif';


	var bn_imgs_off = new Object();
	bn_imgs_off['broadcast'] = new Image();
	bn_imgs_off['broadcast'].src = '/weta/twoschools/global/images/bn_broadcast.gif';
	bn_imgs_off['order'] = new Image();
	bn_imgs_off['order'].src = '/weta/twoschools/global/images/bn_order.gif';
	bn_imgs_off['tell_a_friend'] = new Image();
	bn_imgs_off['tell_a_friend'].src = '/weta/twoschools/global/images/bn_tell_a_friend.gif';
	bn_imgs_off['feedback'] = new Image();
	bn_imgs_off['feedback'].src = '/weta/twoschools/global/images/bn_feedback.gif';
	bn_imgs_off['about_rr'] = new Image();
	bn_imgs_off['about_rr'].src = '/weta/twoschools/global/images/bn_about_rr.gif';
	bn_imgs_off['site_map'] = new Image();
	bn_imgs_off['site_map'].src = '/weta/twoschools/global/images/bn_site_map.gif';
	bn_imgs_off['resources'] = new Image();
	bn_imgs_off['resources'].src = '/weta/twoschools/global/images/bn_resources.gif';
}

function bottomNavOn(id){
	if(document.images){
		document.images[id].src = bn_imgs_on[id].src;
	}
}

function bottomNavOff(id){
	if(document.images){
		document.images[id].src = bn_imgs_off[id].src;
	}
}