if (document.images) {         					   // Active Images

            img1on = new Image();
            img1on.src = "img02/index/nav/park_admin_x.gif";
            img2on = new Image();
            img2on.src = "img02/index/nav/activities_x.gif";
            img3on = new Image();
            img3on.src = "img02/index/nav/parks_fac_x.gif";
			img4on = new Image();
            img4on.src = "img02/index/nav/news_x.gif";
            img5on = new Image();
            img5on.src = "img02/index/nav/contact_x.gif";
            img6on = new Image();
            img6on.src = "img02/index/nav/reservations_x.gif";
			img7on = new Image();
            img7on.src = "img02/index/nav/employment_x.gif";
			img8on = new Image();
            img8on.src = "img02/index/nav/map2020_x.gif";
            img9on = new Image();
            img9on.src = "img02/index/nav/advertising_x.gif";
			img10on = new Image();
            img10on.src = "img02/index/nav/volunteering_x.gif";
			img11on = new Image();
            img11on.src = "img02/index/nav/permits_fees_x.gif";
            img12on = new Image();
            img12on.src = "img02/index/catalog01_x.gif";
			img13on = new Image();
            img13on.src = "img02/index/catalog03_x.gif";
			img14on = new Image();
            img14on.src = "img02/index/nav/park_police_x.gif";
			img15on = new Image();
            img15on.src = "img02/index/nav/bid_notice_x.gif";

            img1off = new Image(); 	
            img1off.src = "img02/index/nav/park_admin.gif";
            img2off = new Image(); 	
            img2off.src = "img02/index/nav/activities.gif";
            img3off = new Image();
            img3off.src = "img02/index/nav/parks_fac.gif";
			img4off = new Image(); 		
            img4off.src = "img02/index/nav/news.gif";
            img5off = new Image(); 	
            img5off.src = "img02/index/nav/contact.gif";
            img6off = new Image();
            img6off.src = "img02/index/nav/reservations.gif";
			img7off = new Image();
            img7off.src = "img02/index/nav/employment.gif";
			img8off = new Image(); 		
            img8off.src = "img02/index/nav/map2020.gif";
            img9off = new Image(); 	
            img9off.src = "img02/index/nav/advertising.gif";
			img10off = new Image(); 	
            img10off.src = "img02/index/nav/volunteering.gif";
			img11off = new Image(); 	
            img11off.src = "img02/index/nav/permits_fees.gif";
            img12off = new Image();
            img12off.src = "img02/index/catalog01.gif";
			img13off = new Image();
            img13off.src = "img02/index/catalog03.gif";
			img14off = new Image();
            img14off.src = "img02/index/nav/park_police.gif";
			img15off = new Image();
            img15off.src = "img02/index/nav/bid_notice.gif";
			}

function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}