var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		pre_nav_home_over = newImage('/_img/main_nav/nav_home_over.gif');
		pre_nav_shows_over = newImage('/_img/main_nav/nav_shows_over.gif');
		pre_nav_group_over = newImage('/_img/main_nav/nav_group_over.gif');
		pre_nav_jobs_over = newImage('/_img/main_nav/nav_jobs_over.gif');
		pre_nav_contact_over = newImage('/_img/main_nav/nav_contact_over.gif');
		pre_nav_about_over = newImage('/_img/main_nav/nav_about_over.gif');
		preloadFlag = true;
	}
}