// Detect if browser is Netscape 3 + or IE 4 +.
bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
	if ((bName == "Netscape" && bVer >= 3) || 
		(bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3"; 
	else br = "n2";

// Create image objects, preload all active and inactive images.

	if (br== "n3") { 
   // ===========================================Nav ON =======================

	overviewon = new Image();
	overviewon.src = "/_assets/images/nav/globnav_overview_over.gif";
	productson = new Image();
	productson.src = "/_assets/images/nav/globnav_pod_serv_over.gif";
	professionalson = new Image();
	professionalson.src = "/_assets/images/nav/globnav_inv_prof_over.gif";
	commentaryon = new Image();
	commentaryon.src = "/_assets/images/nav/globnav_mar_com_over.gif";
  	contactson = new Image();
	contactson.src = "/_assets/images/nav/globnav_contacts_over.gif";
	
   // ===========================================Nav OFF ======================

	overviewoff = new Image();
	overviewoff.src = "/_assets/images/nav/globnav_overview_off.gif"; 
	productsoff = new Image();
	productsoff.src = "/_assets/images/nav/globnav_pod_serv_off.gif"; 
	professionalsoff = new Image();
	professionalsoff.src = "/_assets/images/nav/globnav_inv_prof_off.gif"; 
	commentaryoff = new Image();
	commentaryoff.src = "/_assets/images/nav/globnav_mar_com_off.gif";
	contactsoff = new Image();
	contactsoff.src = "/_assets/images/nav/globnav_contacts_off.gif";
	
}


// Function to "activate" images.
function imgAct(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "on.src");

    }
}

// Function to "deactivate" images.
function imgInact(imgName) {
    if (br == "n3") {
    document[imgName].src = eval(imgName + "off.src");

    }
}