if (document.images) {
    homebuttonup       = new Image();
    homebuttondown     = new Image();
	
	sponsorsbuttonup      = new Image();
    sponsorsbuttondown    = new Image();

	reservationsbuttonup       = new Image();
    reservationsbuttondown     = new Image();
	
	itemsbuttonup       = new Image();
    itemsbuttondown     = new Image();
	
	programsbuttonup       = new Image();
    programsbuttondown     = new Image();
	
	homebuttonup.src   = "pics/links/home_dark.jpg" ;
    homebuttondown.src = "pics/links/home_on.jpg" ;
	
	sponsorsbuttonup.src   = "pics/links/sponsors_dark.jpg" ;
    sponsorsbuttondown.src = "pics/links/sponsors_on.jpg" ;
	
	reservationsbuttonup.src   = "pics/links/reservations_dark.jpg" ;
    reservationsbuttondown.src = "pics/links/reservations_on.jpg" ;
	
	itemsbuttonup.src   = "pics/links/items_dark.jpg" ;
    itemsbuttondown.src = "pics/links/items_on.jpg" ;
	
	programsbuttonup.src   = "pics/links/programs_dark.jpg" ;
    programsbuttondown.src = "pics/links/programs_on.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" );
    }
}