if (document.images) {
    newsbuttonup       = new Image();
    newsbuttonup.src   = "images/04_NAV_news1.png" ;
    newsbuttondown     = new Image() ;
    newsbuttondown.src = "images/04_NAV_news2.png" ;

    bandbuttonup       = new Image();
    bandbuttonup.src   = "images/04_NAV_band1.png" ;
    bandbuttondown     = new Image() ;
    bandbuttondown.src = "images/04_NAV_band2.png" ;
    
    livebuttonup       = new Image();
    livebuttonup.src   = "images/04_NAV_live1.png" ;
    livebuttondown     = new Image() ;
    livebuttondown.src = "images/04_NAV_live2.png" ;
    
    mediabuttonup       = new Image();
    mediabuttonup.src   = "images/04_NAV_media1.png" ;
    mediabuttondown     = new Image() ;
    mediabuttondown.src = "images/04_NAV_media2.png" ;
    
    pressbuttonup       = new Image();
    pressbuttonup.src   = "images/04_NAV_press1.png" ;
    pressbuttondown     = new Image() ;
    pressbuttondown.src = "images/04_NAV_press2.png" ;
    
    guestbuttonup       = new Image();
    guestbuttonup.src   = "images/04_NAV_guest1.png" ;
    guestbuttondown     = new Image() ;
    guestbuttondown.src = "images/04_NAV_guest2.png" ;
    
    linksbuttonup       = new Image();
    linksbuttonup.src   = "images/04_NAV_links1.png" ;
    linksbuttondown     = new Image() ;
    linksbuttondown.src = "images/04_NAV_links2.png" ;
    
    shopbuttonup       = new Image();
    shopbuttonup.src   = "images/04_NAV_shop1.png" ;
    shopbuttondown     = new Image() ;
    shopbuttondown.src = "images/04_NAV_shop2.png" ;
    
    homebuttonup       = new Image();
    homebuttonup.src   = "images/05_MID_home1.png" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "images/05_MID_home2.png" ;
}

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" );
    }
}