var current_image_num = 0;
var banner_list = [3179255,3179256,3179269,3179270,3179271,3179272,3179273,3179274,3179275,3179276,3179278,3179279];
var default_banner = 0;  // index of banner_list, not an id within banner_list, use 0 for random banner
var image_dir = "http://cit.s3.amazonaws.com/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',  'links/jpl-link-over.gif', 'links/accesscaltech-link-over.gif', 'links/caltechtoday-link-over.gif',
    'links/tedxcaltech-link-over.gif',  'links/facebook-icon-over.gif',  'links/flickr-icon-over.gif',  'links/itunes-icon-over.gif',  'links/rss-icon-over.gif');
}