if (document.images) {
    home       = new Image();
    home.src   = "navbar/home_o.png" ;
    homeover     = new Image() ;
    homeover.src = "navbar/home.png" ;

    videos       = new Image();
    videos.src   = "navbar/videos_o.png" ;
    videosover     = new Image() ;
    videosover.src = "navbar/videos.png" ;

    games       = new Image();
    games.src   = "navbar/games_o.png" ;
    gamesover     = new Image() ;
    gamesover.src = "navbar/games.png" ;

    pictures       = new Image();
    pictures.src   = "navbar/pictures_o.png" ;
    picturesover     = new Image() ;
    picturesover.src = "navbar/pictures.png" ;

    flash       = new Image();
    flash.src   = "navbar/flash_o.png" ;
    flashover     = new Image() ;
    flashover.src = "navbar/flash.png" ;

    jokes       = new Image();
    jokes.src   = "navbar/jokes_o.png" ;
    jokesover     = new Image() ;
    jokesover.src = "navbar/jokes.png" ;

    friends       = new Image();
    friends.src   = "navbar/friends_o.png" ;
    friendsover     = new Image() ;
    friendsover.src = "navbar/friends.png" ;

    contact       = new Image();
    contact.src   = "navbar/contact_o.png" ;
    contactover     = new Image() ;
    contactover.src = "navbar/contact.png" ;
}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "over.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + ".src" );
    }
}