//Load Model Nav
   
   //on images
    modelnavVehicleon = new Image();
    modelnavVehicleon.src = "/img/" + curVehicle + "_nav_on.gif";
    modelnavdefaulton = new Image();
    modelnavdefaulton.src = "/img/blank_nav.gif";
    
    
    modelnavvehshowroomon = new Image();          
    modelnavvehshowroomon.src = "/img/vehicles_nav_on.gif";
    
    //off images
    modelnavVehicleoff = new Image();
    modelnavVehicleoff.src = "/img/" + curVehicle + "_nav.gif";
    modelnavdefaultoff = new Image();
    modelnavdefaultoff.src = "/img/blank_nav.gif";    
    
//curVehicle can be cherokee,wrangler,liberty, or gr-cherokee