<!-- 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 logisticson = new Image();
  logisticson.src="images/logistics_on.gif";
  var logisticsoff = new Image();
  logisticsoff.src="images/logistics_off.gif";
  var overviewon = new Image();
  overviewon.src="images/overview_on.gif";
  var overviewoff = new Image();
  overviewoff.src="images/overview_off.gif";
  var scienceon = new Image();
  scienceon.src="images/science_on.gif";
  var scienceoff = new Image();
  scienceoff.src="images/science_off.gif";
  var flighton = new Image();
  flighton.src="images/flight_on.gif";
  var flightoff = new Image();
  flightoff.src="images/flight_off.gif";
  var revisitedon = new Image();
  revisitedon.src="images/revisited_on.gif";
  var revisitedoff = new Image();
  revisitedoff.src="images/revisited_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 -->