function preloader() {
	if (document.images) {
	//sub navigation
	nav_senate_r = newImage("/images/student/nav__r.gif");
	nav_ptk_r = newImage("/images/student/nav__r.gif");
	nav_athletics_r = newImage("/images/student/nav__r.gif");
	nav_fellowship_r = newImage("/images/student/nav__r.gif");
	nav_saclub_r = newImage("/images/student/nav__r.gif");
	nav_sacenter_r = newImage("/images/student/nav__r.gif");
	nav_intramurals_r = newImage("/images/student/nav_intramurals_r.gif");

	preloadFlag = true
	}
}