// preload images

// top images for main theme
nav_UK_on = new Image();
nav_UK_on.src="/display_images/challenge_events/navigation/tab_ukchallenges_on.gif";
nav_UK_off = new Image();
nav_UK_off.src="/display_images/challenge_events/navigation/tab_ukchallenges_off.gif";

nav_intl_on = new Image();
nav_intl_on.src="/display_images/challenge_events/navigation/tab_international_on.gif";
nav_intl_off = new Image();
nav_intl_off.src="/display_images/challenge_events/navigation/tab_international_off.gif";

nav_running_on = new Image();
nav_running_on.src="/display_images/challenge_events/navigation/tab_running_on.gif";
nav_running_off = new Image();
nav_running_off.src="/display_images/challenge_events/navigation/tab_running_off.gif";

nav_fundraising_on = new Image();
nav_fundraising_on.src="/display_images/challenge_events/navigation/tab_fundraising_on.gif";
nav_fundraising_off = new Image();
nav_fundraising_off.src="/display_images/challenge_events/navigation/tab_fundraising_off.gif";

nav_whyNDCS_on = new Image();
nav_whyNDCS_on.src="/display_images/challenge_events/navigation/tab_whyndcs_on.gif";
nav_whyNDCS_off = new Image();
nav_whyNDCS_off.src="/display_images/challenge_events/navigation/tab_whyndcs_off.gif";

// top images for uk theme
uk_nav_UK_on = new Image();
uk_nav_UK_on.src="/display_images/challenge_events/navigation/tab_ukchallenges_on_uk.gif";
uk_nav_UK_off = new Image();
uk_nav_UK_off.src="/display_images/challenge_events/navigation/tab_ukchallenges_off_uk.gif";

uk_nav_intl_on = new Image();
uk_nav_intl_on.src="/display_images/challenge_events/navigation/tab_international_on_uk.gif";
uk_nav_intl_off = new Image();
uk_nav_intl_off.src="/display_images/challenge_events/navigation/tab_international_off_uk.gif";

uk_nav_running_on = new Image();
uk_nav_running_on.src="/display_images/challenge_events/navigation/tab_running_on_uk.gif";
uk_nav_running_off = new Image();
uk_nav_running_off.src="/display_images/challenge_events/navigation/tab_running_off_uk.gif";

uk_nav_fundraising_on = new Image();
uk_nav_fundraising_on.src="/display_images/challenge_events/navigation/tab_fundraising_on_uk.gif";
uk_nav_fundraising_off = new Image();
uk_nav_fundraising_off.src="/display_images/challenge_events/navigation/tab_fundraising_off_uk.gif";

uk_nav_whyNDCS_on = new Image();
uk_nav_whyNDCS_on.src="/display_images/challenge_events/navigation/tab_whyndcs_on_uk.gif";
uk_nav_whyNDCS_off = new Image();
uk_nav_whyNDCS_off.src="/display_images/challenge_events/navigation/tab_whyndcs_off_uk.gif";

// top images for running theme
run_nav_UK_on = new Image();
run_nav_UK_on.src="/display_images/challenge_events/navigation/tab_ukchallenges_on_running.gif";
run_nav_UK_off = new Image();
run_nav_UK_off.src="/display_images/challenge_events/navigation/tab_ukchallenges_off_running.gif";

run_nav_intl_on = new Image();
run_nav_intl_on.src="/display_images/challenge_events/navigation/tab_international_on_running.gif";
run_nav_intl_off = new Image();
run_nav_intl_off.src="/display_images/challenge_events/navigation/tab_international_off_running.gif";

run_nav_running_on = new Image();
run_nav_running_on.src="/display_images/challenge_events/navigation/tab_running_on_running.gif";
run_nav_running_off = new Image();
run_nav_running_off.src="/display_images/challenge_events/navigation/tab_running_off_running.gif";

run_nav_fundraising_on = new Image();
run_nav_fundraising_on.src="/display_images/challenge_events/navigation/tab_fundraising_on_running.gif";
run_nav_fundraising_off = new Image();
run_nav_fundraising_off.src="/display_images/challenge_events/navigation/tab_fundraising_off_running.gif";

run_nav_whyNDCS_on = new Image();
run_nav_whyNDCS_on.src="/display_images/challenge_events/navigation/tab_whyndcs_on_running.gif";
run_nav_whyNDCS_off = new Image();
run_nav_whyNDCS_off.src="/display_images/challenge_events/navigation/tab_whyndcs_off_running.gif";