browserName=navigator.appName;
		browserVer=parseInt(navigator.appVersion);
		if(browserVer >=3)
			version="3";
		else
			version="2";
		
		if (version=="3"){			
			nav1on=new Image();
			nav1on.src="images/portfolio_nav1_companyon.gif";
			nav1off=new Image();
			nav1off.src="images/portfolio_nav1_company.gif";

			nav2on=new Image();
			nav2on.src="images/portfolio_nav1_supporton.gif";
			nav2off=new Image();
			nav2off.src="images/portfolio_nav1_support.gif";

			nav3on=new Image();
			nav3on.src="images/portfolio_nav1_contacton.gif";
			nav3off=new Image();
			nav3off.src="images/portfolio_nav1_contact.gif";
			
			nav4on=new Image();
			nav4on.src="images/company_nav2_portfolioon.gif";
			nav4off=new Image();
			nav4off.src="images/company_nav2_portfolio.gif";
			
			nav5on=new Image();
			nav5on.src="images/company_nav2_productson.gif";
			nav5off=new Image();
			nav5off.src="images/company_nav2_products.gif";
			
			nav6on=new Image();
			nav6on.src="images/company_nav2_serviceson.gif";
			nav6off=new Image();
			nav6off.src="images/company_nav2_services.gif";
			
			nav8on=new Image();
			nav8on.src="images/portfolio_nav3_healthon.gif";
			nav8off=new Image();
			nav8off.src="images/portfolio_nav3_health.gif";
			
			nav9on=new Image();
			nav9on.src="images/portfolio_nav3_charityon.gif";
			nav9off=new Image();
			nav9off.src="images/portfolio_nav3_charity.gif";
			
			nav10on=new Image();
			nav10on.src="images/portfolio_nav3_marketon.gif";
			nav10off=new Image();
			nav10off.src="images/portfolio_nav3_market.gif";
			
			nav11on=new Image();
			nav11on.src="images/portfolio_nav3_reston.gif";
			nav11off=new Image();
			nav11off.src="images/portfolio_nav3_rest.gif";
			
			nav12on=new Image();
			nav12on.src="images/portfolio_nav3_productson.gif";
			nav12off=new Image();
			nav12off.src="images/portfolio_nav3_products.gif";
			
			nav13on=new Image();
			nav13on.src="images/portfolio_nav3_moreon.gif";
			nav13off=new Image();
			nav13off.src="images/portfolio_nav3_more.gif";
			
		}