img1on = new Image();
		img1on.src = "../images/nav_info_on.gif";
		img1off = new Image();
		img1off.src = "../images/nav_info_off.gif";
		
		img2on = new Image();
		img2on.src = "../images/nav_port_on.gif";
		img2off = new Image();
		img2off.src = "../images/nav_port_off.gif";

		img3on = new Image();
		img3on.src = "../images/nav_head_on.gif";
		img3off = new Image();
		img3off.src = "../images/nav_head_off.gif";

		img4on = new Image();
		img4on.src = "../images/nav_cont_on.gif";
		img4off = new Image();
		img4off.src = "../images/nav_cont_off.gif";
		
		img5on = new Image();
		img5on.src = "../images/nav_home_on.gif";
		img5off = new Image();
		img5off.src = "../images/nav_home_off.gif";
		
		img13on = new Image();
		img13on.src = "../images/nav_head_cont_on.gif";
		img13off = new Image();
		img13off.src = "../images/nav_head_cont_off.gif";
		
		img14_1 = new Image();
		img14_1.src = "../images/nav_port_info_hs_1.gif";
		img14_2 = new Image();
		img14_2.src = "../images/nav_port_info_hs_2.gif";
		img14_3 = new Image();
		img14_3.src = "../images/nav_port_info_hs_3.gif";
				
		function imgSwap(strImgName, strSwapWith) {
        if (document.images) {
                document.images[strImgName].src = eval(strSwapWith + '.src');
        }
		}