var current_image_num = 0;
    banner_list = [2463597,2463598,2463599,2463600,2463601,2463602,2463603,2463604];
    default_banner = 0;  // index of banner_list, not an id within banner_list, use 0 for random banner
    image_dir = "http://www.caltech.edu/images/";

    function preloadPage() {
	    preloadImages('infobar/about','navbar/about-over','navbar/about-on','infobar/applying','navbar/applying-over','navbar/applying-on','infobar/studying','navbar/studying-over','navbar/studying-on','infobar/academic','navbar/academic-over','navbar/academic-on','infobar/research','navbar/research-over','navbar/research-on','infobar/alumni','navbar/alumni-over','navbar/alumni-on','infobar/news','navbar/news-over','navbar/news-on','infobar/calendars','navbar/calendars-over','navbar/calendars-on','infobar/working','navbar/working-over','navbar/working-on','infobar/administrative','navbar/administrative-over','navbar/administrative-on','infobar/site','navbar/site-over','navbar/site-on','infobar/giving','navbar/giving-over','navbar/giving-on',  'bottom-arrow.gif', 'bottom-dot.gif', 'clear-menu.gif', 'left.gif', 'top.gif', 'search/go-over.gif',  'search/archives-over.gif',  'search/archives-on.gif',  'search/library-over.gif',  'search/library-on.gif',  'search/calendar-over.gif',  'search/calendar-on.gif',  'search/dimple-off.gif',  'search/dimple-on.gif',  'search/directory-over.gif',  'search/directory-on.gif',  'search/caltech-off.gif',  'search/caltech-over.gif');
    }