if (document.images) {
    homeup       = new Image();
    homeup.src   = "cinema/buttonHomeUp.png" ;
    homedown     = new Image() ;
    homedown.src = "cinema/buttonHome.png" ;
wellup       = new Image();
    wellup.src   = "cinema/buttonWellUp.png" ;
    welldown     = new Image() ;
    welldown.src = "cinema/buttonWell.png" ;
speakerup       = new Image();
    speakerup.src   = "cinema/buttonSpkrUp.png" ;
    speakerdown     = new Image() ;
    speakerdown.src = "cinema/buttonSpkr.png" ;
pedoup       = new Image();
    pedoup.src   = "cinema/buttonPedoUp.png" ;
    pedodown     = new Image() ;
    pedodown.src = "cinema/buttonPedo.png" ;
cartup       = new Image();
    cartup.src   = "cinema/buttonCartUp.png" ;
    cartdown     = new Image() ;
    cartdown.src = "cinema/buttonCart.png" ;
walkup       = new Image();
    walkup.src   = "cinema/buttonWalkUp.png" ;
    walkdown     = new Image() ;
    walkdown.src = "cinema/buttonWalk.png" ;
subscribeup       = new Image();
    subscribeup.src   = "cinema/buttonSubscribeUp.png" ;
    subscribedown     = new Image() ;
    subscribedown.src = "cinema/buttonSubscribe.png" ;
contactup       = new Image();
    contactup.src   = "cinema/contactUp.png" ;
    contactdown     = new Image() ;
    contactdown.src = "cinema/contact.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" );
    }
}