if (document.images) {

var hnav1 = new Image();
hnav1.src = "/exhibitions/mythiccreatures/images/hnav/hnav_air.jpg";
var hnav1on = new Image();
hnav1on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_air_on.jpg";

var hnav2 = new Image();
hnav2.src = "/exhibitions/mythiccreatures/images/hnav/hnav_water.jpg";
var hnav2on = new Image();
hnav2on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_water_on.jpg";

var hnav3 = new Image();
hnav3.src = "/exhibitions/mythiccreatures/images/hnav/hnav_land.jpg";
var hnav3on = new Image();
hnav3on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_land_on.jpg";

var hnav4 = new Image();
hnav4.src = "/exhibitions/mythiccreatures/images/hnav/hnav_dragons.jpg";
var hnav4on = new Image();
hnav4on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_dragons_on.jpg";

var hnav5 = new Image();
hnav5.src = "/exhibitions/mythiccreatures/images/hnav/hnav_curators.jpg";
var hnav5on = new Image();
hnav5on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_curators_on.jpg";

var hnav6 = new Image();
hnav6.src = "/exhibitions/mythiccreatures/images/hnav/hnav_intro.jpg";
var hnav6on = new Image();
hnav6on.src = "/exhibitions/mythiccreatures/images/hnav/hnav_intro_on.jpg";

var unav1 = new Image();
unav1.src = "/exhibitions/mythiccreatures/images/hnav/unav_resources.gif";
var unav1on = new Image();
unav1on.src = "/exhibitions/mythiccreatures/images/hnav/unav_resources_on.gif";

var unav2 = new Image();
unav2.src = "/exhibitions/mythiccreatures/images/hnav/unav_educators.gif";
var unav2on = new Image();
unav2on.src = "/exhibitions/mythiccreatures/images/hnav/unav_educators_on.gif";

var unav3 = new Image();
unav3.src = "/exhibitions/mythiccreatures/images/hnav/unav_exhibition_map.gif";
var unav3on = new Image();
unav3on.src = "/exhibitions/mythiccreatures/images/hnav/unav_exhibition_map_on.gif";

var unav4 = new Image();
unav4.src = "/exhibitions/mythiccreatures/images/hnav/unav2_collaborators.gif";
var unav4on = new Image();
unav4on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_collaborators_on.gif";

var unav5 = new Image();
unav5.src = "/exhibitions/mythiccreatures/images/hnav/unav2_shop.gif";
var unav5on = new Image();
unav5on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_shop_on.gif";

var unav6 = new Image();
unav6.src = "/exhibitions/mythiccreatures/images/hnav/unav_for_kids.gif";
var unav6on = new Image();
unav6on.src = "/exhibitions/mythiccreatures/images/hnav/unav_for_kids_on.gif";

var unav2_1 = new Image();
unav2_1.src = "/exhibitions/mythiccreatures/images/hnav/unav2_visitor_info.gif";
var unav2_1on = new Image();
unav2_1on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_visitor_info_on.gif";

var unav2_2 = new Image();
unav2_2.src = "/exhibitions/mythiccreatures/images/hnav/unav2_public_programs.gif";
var unav2_2on = new Image();
unav2_2on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_public_programs_on.gif";

var unav2_3 = new Image();
unav2_3.src = "/exhibitions/mythiccreatures/images/hnav/unav2_behind_scenes.gif";
var unav2_3on = new Image();
unav2_3on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_behind_scenes_on.gif";

var unav2_4 = new Image();
unav2_4.src = "/exhibitions/mythiccreatures/images/hnav/unav2_site_credits.gif";
var unav2_4on = new Image();
unav2_4on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_site_credits_on.gif";

var unav2_5 = new Image();
unav2_5.src = "/exhibitions/mythiccreatures/images/hnav/unav2_sponsors.gif";
var unav2_5on = new Image();
unav2_5on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_sponsors_on.gif";

var unav2_6 = new Image();
unav2_6.src = "/exhibitions/mythiccreatures/images/hnav/unav2_fun_facts.gif";
var unav2_6on = new Image();
unav2_6on.src = "/exhibitions/mythiccreatures/images/hnav/unav2_fun_facts_on.gif";

var textnavnext = new Image();
textnavnext.src = "/exhibitions/mythiccreatures/common/images/bt_other_next.gif"
var textnavnexton = new Image();
textnavnexton.src = "/exhibitions/mythiccreatures/common/images/bt_other_next_on.gif"

var textnavback = new Image();
textnavback.src = "/exhibitions/mythiccreatures/common/images/bt_other_back.gif"
var textnavbackon = new Image();
textnavbackon.src = "/exhibitions/mythiccreatures/common/images/bt_other_back_on.gif"

var closewindow = new Image();
closewindow.src = "/exhibitions/lizards/common/images/close_window.gif"
var closewindowon = new Image();
closewindowon.src = "/exhibitions/lizards/common/images/close_window_over.gif"

var introvideo = new Image();
introvideo.src = "/exhibitions/lizards/images/intro_video.gif"
var introvideoon = new Image();
introvideoon.src = "/exhibitions/lizards/images/intro_video_over.gif"

var tick1 = new Image();
tick1.src = "/common/content/images/but_buytickets_off.gif";
var tick1on = new Image();
tick1on.src = "/common/content/images/but_buytickets_on.gif";
}


function imgon(name)  {
if (document.images){
document[name].src = eval(name + "on.src");}
}

function imgoff(name)  {
if (document.images){
document[name].src = eval(name + ".src");}
}