browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
        if ((browserName == "Netscape" && browserVer >= 3) ||
	(browserName == "Microsoft Internet Explorer" && browserVer >= 4)) version="n3";
	
        else version="n2";
        
        if (version == "n3")         {
    
        nav1on=new Image(51, 33);
        nav1on.src="graphics/tab_home_on.png";
        nav1off=new Image(51, 33);
        nav1off.src="graphics/tab_home_off.png";

        nav2on=new Image(77, 33);
        nav2on.src="graphics/tab_overview_on.png";
        nav2off=new Image(77, 33);
        nav2off.src="graphics/tab_overview_off.png";

        nav3on=new Image(78, 33);
        nav3on.src="graphics/tab_location_on.png";
        nav3off=new Image(78, 33);
        nav3off.src="graphics/tab_location_off.png";

        nav4on=new Image(74, 33);
        nav4on.src="graphics/tab_residences_on.png";
        nav4off=new Image(84, 33);
        nav4off.src="graphics/tab_residences_off.png";

        nav5on=new Image(80, 33);
        nav5on.src="graphics/tab_amenities_on.png";
        nav5off=new Image(80, 33);
        nav5off.src="graphics/tab_amenities_off.png";

        nav6on=new Image(45, 33);
        nav6on.src="graphics/tab_team_on.png";
        nav6off=new Image(45, 33);
        nav6off.src="graphics/tab_team_off.png";

        nav7on=new Image(52, 33);
        nav7on.src="graphics/tab_news_on.png";
        nav7off=new Image(52, 33);
        nav7off.src="graphics/tab_news_off.png";

        nav8on=new Image(39, 33);
        nav8on.src="graphics/tab_faq_on.png";
        nav8off=new Image(39, 33);
        nav8off.src="graphics/tab_faq_off.png";

        nav9on=new Image(94, 33);
        nav9on.src="graphics/tab_infocenter_on.png";
        nav9off=new Image(94, 33);
        nav9off.src="graphics/tab_infocenter_off.png";

        nav10on=new Image(279, 18);
        nav10on.src="graphics/btn_hdr_vt_tour_on.png";
        nav10off=new Image(279, 18);
        nav10off.src="graphics/btn_hdr_vt_tour_off.png";

        nav11on=new Image(186, 35);
        nav11on.src="graphics/btn_community_virtual_tour_on.png";
        nav11off=new Image(186, 35);
        nav11off.src="graphics/btn_community_virtual_tour_off.png";

        nav12on=new Image(186, 35);
        nav12on.src="graphics/btn_walk_the_neighborhood_on.png";
        nav12off=new Image(186, 35);
        nav12off.src="graphics/btn_walk_the_neighborhood_off.png";
				
        nav13on=new Image(175, 18);
        nav13on.src="graphics/btn_hdr_reserve_unit_on.png";
        nav13off=new Image(175, 18);
        nav13off.src="graphics/btn_hdr_reserve_unit_off.png";

        }

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;
        }
}