var abouoff = new Image();abouoff.src = "images/navs/about.gif";
var parkoff = new Image();parkoff.src = "images/navs/parking.gif";
var coupoff = new Image();coupoff.src = "images/navs/coupon.gif";
var mapoff = new Image();mapoff.src = "images/navs/map.gif";
var contoff = new Image();contoff.src = "images/navs/contact.gif";


var abouon = new Image();abouon.src = "images/navs/about_on.gif";
var parkon = new Image();parkon.src = "images/navs/parking_on.gif";
var coupon = new Image();coupon.src = "images/navs/coupon_on.gif";
var mapon = new Image();mapon.src = "images/navs/map_on.gif";
var conton = new Image();conton.src = "images/navs/contact_on.gif";