if (document.images) {
    main_nav_cars_up       = new Image();
    main_nav_cars_up.src   = "images/main_nav_cars.jpg" ;
    main_nav_cars_down     = new Image() ;
    main_nav_cars_down.src = "images/main_nav_cars_rollover.jpg" ;

    main_nav_projects_up       = new Image();
    main_nav_projects_up.src   = "images/main_nav_projects.jpg" ;
    main_nav_projects_down     = new Image() ;
    main_nav_projects_down.src = "images/main_nav_projects_rollover.jpg" ;
    
    main_nav_parts_up       = new Image();
    main_nav_parts_up.src   = "images/main_nav_parts.jpg" ;
    main_nav_parts_down     = new Image() ;
    main_nav_parts_down.src = "images/main_nav_parts_rollover.jpg" ;

    main_nav_boss_up       = new Image();
    main_nav_boss_up.src   = "images/main_nav_boss.jpg" ;
    main_nav_boss_down     = new Image() ;
    main_nav_boss_down.src = "images/main_nav_boss_rollover.jpg" ;

    main_nav_about_up       = new Image();
    main_nav_about_up.src   = "images/main_nav_about.jpg" ;
    main_nav_about_down     = new Image() ;
    main_nav_about_down.src = "images/main_nav_about_rollover.jpg" ;

    main_nav_contact_up       = new Image();
    main_nav_contact_up.src   = "images/main_nav_contact.jpg" ;
    main_nav_contact_down     = new Image() ;
    main_nav_contact_down.src = "images/main_nav_contact_rollover.jpg" ;
    
    side_nav_cars_up       = new Image();
    side_nav_cars_up.src   = "images/side_nav_cars.jpg" ;
    side_nav_cars_down     = new Image() ;
    side_nav_cars_down.src = "images/side_nav_cars_rollover.jpg" ;
    
    side_nav_parts_up       = new Image();
    side_nav_parts_up.src   = "images/side_nav_parts.jpg" ;
    side_nav_parts_down     = new Image() ;
    side_nav_parts_down.src = "images/side_nav_parts_rollover.jpg" ;
    
    side_nav_projects_up       = new Image();
    side_nav_projects_up.src   = "images/side_nav_projects.jpg" ;
    side_nav_projects_down     = new Image() ;
    side_nav_projects_down.src = "images/side_nav_projects_rollover.jpg" ;
    
    side_nav_restoration_up       = new Image();
    side_nav_restoration_up.src   = "images/side_nav_restoration.jpg" ;
    side_nav_restoration_down     = new Image() ;
    side_nav_restoration_down.src = "images/side_nav_restoration_rollover.jpg" ;
    
    side_nav_delivery_up       = new Image();
    side_nav_delivery_up.src   = "images/side_nav_delivery.jpg" ;
    side_nav_delivery_down     = new Image() ;
    side_nav_delivery_down.src = "images/side_nav_delivery_rollover.jpg" ;
    
    side_nav_financing_up       = new Image();
    side_nav_financing_up.src   = "images/side_nav_financing.jpg" ;
    side_nav_financing_down     = new Image() ;
    side_nav_financing_down.src = "images/side_nav_financing_rollover.jpg" ;
    
    side_nav_news_up       = new Image();
    side_nav_news_up.src   = "images/side_nav_news.jpg" ;
    side_nav_news_down     = new Image() ;
    side_nav_news_down.src = "images/side_nav_news_rollover.jpg" ;
    
    side_nav_photo_up       = new Image();
    side_nav_photo_up.src   = "images/side_nav_photo.jpg" ;
    side_nav_photo_down     = new Image() ;
    side_nav_photo_down.src = "images/side_nav_photo_rollover.jpg" ;
    
    side_nav_request_up       = new Image();
    side_nav_request_up.src   = "images/side_nav_request.jpg" ;
    side_nav_request_down     = new Image() ;
    side_nav_request_down.src = "images/side_nav_request_rollover.jpg" ;
    
    side_nav_request_internal_up       = new Image();
    side_nav_request_internal_up.src   = "images/side_nav_request_internal.jpg" ;
    side_nav_request_internal_down     = new Image() ;
    side_nav_request_internal_down.src = "images/side_nav_request_internal_rollover.jpg" ;
    
    bottom_events_up       = new Image();
    bottom_events_up.src   = "images/bottom_events.jpg" ;
    bottom_events_down     = new Image() ;
    bottom_events_down.src = "images/bottom_events_rollover.jpg" ;
    
    bottom_news_up       = new Image();
    bottom_news_up.src   = "images/bottom_news.jpg" ;
    bottom_news_down     = new Image() ;
    bottom_news_down.src = "images/bottom_news_rollover.jpg" ;

}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "_down.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "_up.src" );
    }
}