//This test only activates script on Netscape 3.0 and above or MSIE 3.01 and above.
var num = parseFloat(navigator.appVersion);
if (navigator.appName == "Netscape" && num >= 3){
        var browserVer = 1;   //test for browserVer == 1 in all dependent functions
} else {
        if (navigator.appName == "Microsoft Internet Explorer" && num >= 3.01){
            var browserVer = 1;
            } else {
                    var browserVer = 2;
           }
}
// preload universal images:
if (browserVer == 1) {

home_off = new Image (132,24);
home_off.src = "images/all/btn_home.gif";
home_on = new Image (132,24);
home_on.src = "images/all/btn_home_on.gif";
about_off = new Image (132,24);
about_off.src = "images/all/btn_about.gif";
about_on = new Image (132,24);
about_on.src = "images/all/btn_about_on.gif";
enserv_off = new Image (132,33);
enserv_off.src = "images/all/btn_enserv.gif";
enserv_on = new Image (132,33);
enserv_on.src = "images/all/btn_enserv_on.gif";
engineering_off = new Image (132,24);
engineering_off.src = "images/all/btn_engineering.gif";
engineering_on = new Image (132,24);
engineering_on.src = "images/all/btn_engineering_on.gif";
landarch_off = new Image (132,33);
landarch_off.src = "images/all/btn_landarch.gif";
landarch_on = new Image (132,33);
landarch_on.src = "images/all/btn_landarch_on.gif";
culture_off = new Image (132,33);
culture_off.src = "images/all/btn_cultural.gif";
culture_on = new Image (132,33);
culture_on.src = "images/all/btn_cultural_on.gif";
casestudies_off = new Image (132,24);
casestudies_off.src = "images/all/btn_casestudies.gif";
casestudies_on = new Image (132,24);
casestudies_on.src = "images/all/btn_casestudies_on.gif";
careers_off = new Image (132,24);
careers_off.src = "images/all/btn_careers.gif";
careers_on = new Image (132,24);
careers_on.src = "images/all/btn_careers_on.gif";
contact_off = new Image (132,24);
contact_off.src = "images/all/btn_contact.gif";
contact_on = new Image (132,24);
contact_on.src = "images/all/btn_contact_on.gif";
links_off = new Image (132,24);
links_off.src = "images/all/btn_resourcelinks.gif";
links_on = new Image (132,24);
links_on.src = "images/all/btn_resourcelinks_on.gif";

}
function hiLite(imgDocID,imgObjName) {
        if (browserVer == 1) {
                //if (document.images) {
                 document.images[imgDocID].src = eval(imgObjName + ".src");
                //}
        }
}