browserName = navigator.appName;

browserVer = parseInt(navigator.appVersion);



if ( (browserName == "Netscape" && browserVer >= 3) || (browserName== "Microsoft Internet Explorer" && browserVer > 3) ) version = "n3";

	else version = "n2";

	if (version == "n3") {
	
	
	n_homeon = new Image();
	n_homeon.src = "images/n_homeon.gif";

	n_homeoff = new Image();
	n_homeoff.src = "images/n_homeoff.gif";
	
	
	n_scienceon = new Image();
	n_scienceon.src = "images/n_scienceon.gif";

	n_scienceoff = new Image();
	n_scienceoff.src = "images/n_scienceoff.gif";
	
	
	n_discoveryon = new Image();
	n_discoveryon.src = "images/n_discoveryon.gif";

	n_discoveryoff = new Image();
	n_discoveryoff.src = "images/n_discoveryoff.gif";
	
		
	n_leadershipon = new Image();
	n_leadershipon.src = "images/n_leadershipon.gif";

	n_leadershipoff = new Image();
	n_leadershipoff.src = "images/n_leadershipoff.gif";	

		
	n_contacton = new Image();
	n_contacton.src = "images/n_contacton.gif";

	n_contactoff = new Image();
	n_contactoff.src = "images/n_contactoff.gif";

}





function img_act(imgName) {

        if (version == "n3") {

        imgOn = eval(imgName + "on.src");

        document [imgName].src = imgOn;

        }

}



function img_inact(imgName) {

        if (version == "n3") {

        imgOff = eval(imgName + "off.src");

        document [imgName].src = imgOff;

        }

}