<!-- use JS to reduce time and productivity - Mikey "CBX" Greenland 8-23-2004 -->
<!-- Begin Script for Alt Tag Layer - Chris Moore 7/21/04 -->
dd=document;NS=(dd.layers)?1:0;IE=(dd.all)?1:0;DOM=(dd.getElementById)?1:0 
function showlr(L){ 
if(NS)dd.layers[L].visibility='show'; 
else if (IE)obg=dd.all[L]; 
else obg=dd.getElementById(L); 
if(!NS)obg.style.visibility='visible'} 
function hidelr(L){ 
if(NS)dd.layers[L].visibility='hide'; 
else if (IE)obg=dd.all[L]; 
else obg=dd.getElementById(L); 
if(!NS)obg.style.visibility='hidden'} 
<!-- End Layer Script -->

<!-- Begin Script for Rollovers -->
if (document.images) {
  var classon = new Image();
  classon.src="images/class_on.gif";
  var classoff = new Image();
  classoff.src="images/class_off.gif";
  var introon = new Image();
  introon.src="images/intro_on.gif";
  var introoff = new Image();
  introoff.src="images/intro_off.gif";
  var overviewon = new Image();
  overviewon.src="images/overview_on.gif";
  var overviewoff = new Image();
  overviewoff.src="images/overview_off.gif";
  var lau2008on = new Image();
  lau2008on.src="images/lau2008_on.gif";
  var lau2008off = new Image();
  lau2008off.src="images/lau2008_off.gif";
  var lauhistoryon = new Image();
  lauhistoryon.src="images/lauhistory_on.gif";
  var lauhistoryoff = new Image();
  lauhistoryoff.src="images/lauhistory_off.gif";
  var phyon = new Image();
  phyon.src="images/phy_on.gif";
  var phyoff = new Image();
  phyoff.src="images/phy_off.gif";
  var cheon = new Image();
  cheon.src="images/che_on.gif";
  var cheoff = new Image();
  cheoff.src="images/che_off.gif";
  var medon = new Image();
  medon.src="images/med_on.gif";
  var medoff = new Image();
  medoff.src="images/med_off.gif";
  var ecoon = new Image();
  ecoon.src="images/eco_on.gif";
  var ecooff = new Image();
  ecooff.src="images/eco_off.gif";

}
function act(imgname) {
  if (document.images) 
    document.images[imgname].src = eval(imgname + "on.src");
}
function inact(imgname) {
  if (document.images)
    document.images[imgname].src = eval(imgname + "off.src");
}
<!-- End Script for Rollovers -->