<!--

	if (document.images) {
		navbut1a = new Image
		navbut1b = new Image
		navbut2a = new Image
		navbut2b = new Image
		navbut3a = new Image
		navbut3b = new Image
		navbut4a = new Image
		navbut4b = new Image
		navbut5a = new Image
		navbut5b = new Image
		navbut6a = new Image
		navbut6b = new Image
		navbut7a = new Image
		navbut7b = new Image
		navbut8a = new Image
		navbut8b = new Image
		navbut9a = new Image
		navbut9b = new Image
		
		
		navbut1a.src = "images/nav_port.gif"
		navbut1b.src = "images/nav_port_over.gif"
		navbut2a.src = "images/nav_about.gif"
		navbut2b.src = "images/nav_about_over.gif"
		navbut3a.src = "images/nav_serv.gif"
		navbut3b.src = "images/nav_serv_over.gif"
		navbut4a.src = "images/nav_cont.gif"
		navbut4b.src = "images/nav_cont_over.gif"
		navbut5a.src = "images/nav_port_show.gif"
		navbut5b.src = "images/nav_port_show_over.gif"
		navbut6a.src = "images/nav_port_trad.gif"
		navbut6b.src = "images/nav_port_trad_over.gif"
		navbut7a.src = "images/nav_port_hl.gif"
		navbut7b.src = "images/nav_port_hl_over.gif"
		navbut8a.src = "images/nav_port_fw.gif"
		navbut8b.src = "images/nav_port_fw_over.gif"
		navbut9a.src = "images/nav_port_cl.gif"
		navbut9b.src = "images/nav_port_cl_over.gif"
	}
	
	function chgImg(imgField,newImg) {
		if (document.images) {
			document[imgField].src=eval(newImg + ".src")
		}
	}

//-->