// JavaScript Functions for HMC Math Website
//
// $Id: hmcmath.js 1837 2011-06-18 00:08:39Z cmc $

// Change the banner image of the page.  Used so we can get different
// banners on page load even when the page has been published out as a
// static page.
function changeBanner() {
   var bannerSet=5;		// We only have five to choose from.
   var banner = document.getElementById("bannerimg");
   var randImage = Math.floor(Math.random()*5);
   var pageBannerImage = "/images/rbanners/" + randImage + ".jpg";
   banner.src=pageBannerImage;
   banner.width="600";
   banner.height="130";
}


if(document.getElementById && document.getElementsByTagName) {  
    window.onload=changeBanner;
}