var J11= false;
if(!((parseInt(navigator.appVersion)<4) && (navigator.appName.toLowerCase().indexOf("microsoft")>-1))) {
    if (parseInt(navigator.appVersion)<3)
    J11=false;
        else
            J11=true;
    }
else
    J11=false;
var imHeads;
var swapIm = new Array();
var old = "";
var oldSrc = "";
var old2 = "";
var oldSrc2 = "";
var Im= new Array (
// Programs landing page
/*0*/  "/images/btn-public-programs-on.gif",
/*1*/  "/images/btn-camp-ins-on.gif",
/*2*/  "/images/btn-science-camp-on.gif",
/*3*/  "/images/btn-school-programs-on.gif",
/*4*/  "/images/btn-distance-learning-on.gif",
/*5*/  "/images/btn-credited-courses-on.gif",
// Exhibits landing page
/*6*/  "/images/btn-current-exhibits-on.gif",
/*7*/  "/images/btn-museum-map-on.gif",
/*8*/  "/images/btn-special-exhibitions-on.gif",
// Research landing page
/*9*/  "/images/btn-OurCollections-on.gif",
/*10*/ "/images/btn-our-scientists-on.gif",
/*11*/ "/images/btn-fossils-law-on.gif"
)
if(J11) {
    for(i in Im) {
        swapIm[i] = new Image();
        swapIm[i].src = Im[i];
        }
    }
function swap(n,index) {
    if(J11) {
        n = arguments[0].toString();
        index = parseInt(arguments[1]);
        eval("oldSrc = document." + n + ".src");
        old = n;
        eval("document." + n + " .src=swapIm[" + index + "].src");
        }
    }
function back() {
    if(J11) {
        eval("document." + old + ".src=oldSrc");
        }
    }