<!--
if (document.images) {
    homebuttonup       = new Image();
    homebuttonup.src   = "graphics/btn-home.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "graphics/btn-home2.gif" ;

    aboutbuttonup       = new Image();
    aboutbuttonup.src   = "graphics/btn-about.gif" ;
    aboutbuttondown     = new Image() ;
    aboutbuttondown.src = "graphics/btn-about2.gif" ;
    
    historybuttonup       = new Image();
    historybuttonup.src   = "graphics/btn-history.gif" ;
    historybuttondown     = new Image() ;
    historybuttondown.src = "graphics/btn-history2.gif" ;
    
    studsbuttonup       = new Image();
    studsbuttonup.src   = "graphics/btn-studs.gif" ;
    studsbuttondown     = new Image() ;
    studsbuttondown.src = "graphics/btn-studs2.gif" ;
    
    queensbuttonup       = new Image();
    queensbuttonup.src   = "graphics/btn-queens.gif" ;
    queensbuttondown     = new Image() ;
    queensbuttondown.src = "graphics/btn-queens2.gif" ;
    
    kittensbuttonup       = new Image();
    kittensbuttonup.src   = "graphics/btn-kittens.gif" ;
    kittensbuttondown     = new Image() ;
    kittensbuttondown.src = "graphics/btn-kittens2.gif" ;
    
    gallerybuttonup       = new Image();
    gallerybuttonup.src   = "graphics/btn-gallery.gif" ;
    gallerybuttondown     = new Image() ;
    gallerybuttondown.src = "graphics/btn-gallery2.gif" ;
}
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" );
    }
}
// -->