if (document.images) {

	home_off = new Image();
    home_off.src = "images/btn_home_off.gif" ;
    home_on = new Image() ;
    home_on.src = "images/btn_home_on.gif" ;
	
	history_off = new Image();
    history_off.src = "images/btn_history_off.gif" ;
    history_on = new Image() ;
    history_on.src = "images/btn_history_on.gif" ;
	
	amenities_off = new Image();
    amenities_off.src = "images/btn_amenities_off.gif" ;
    amenities_on = new Image() ;
    amenities_on.src = "images/btn_amenities_on.gif" ;
	
	our_city_off = new Image();
    our_city_off.src = "images/btn_our_city_off.gif" ;
    our_city_on = new Image() ;
    our_city_on.src = "images/btn_our_city_on.gif" ;
	
	upcoming_events_off = new Image();
    upcoming_events_off.src = "images/btn_upcoming_events_off.gif" ;
    upcoming_events_on = new Image() ;
    upcoming_events_on.src = "images/btn_upcoming_events_on.gif" ;
	
	rooms_rates_off = new Image();
    rooms_rates_off.src = "images/btn_rooms_rates_off.gif" ;
    rooms_rates_on = new Image() ;
    rooms_rates_on.src = "images/btn_rooms_rates_on.gif" ;
	
	contact_off = new Image();
    contact_off.src = "images/btn_contact_off.gif" ;
    contact_on = new Image() ;
    contact_on.src = "images/btn_contact_on.gif" ;
	
	prev_off = new Image();
    prev_off.src = "images/btn_prev_off.gif" ;
    prev_on = new Image() ;
    prev_on.src = "images/btn_prev_on.gif" ;
	
	next_off = new Image();
    next_off.src = "images/btn_next_off.gif" ;
    next_on = new Image() ;
    next_on.src = "images/btn_next_on.gif" ;


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