if (document.images) {
    homebuttonup       = new Image();
    homebuttonup.src   = "/index_files/mb_strona_g_wna.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "/index_files/mb_strona_g_wna_1.gif" ;
	
    newsbuttonup     = new Image();
    newsbuttonup.src = "/index_files/mb_aktualno_ci.gif" ;
    newsbuttondown     = new Image() ;
    newsbuttondown.src = "/index_files/mb_aktualno_ci_1.gif" ;	
	
    articlesbuttonup     = new Image();
    articlesbuttonup.src = "/index_files/mb_strona_artykuly.gif" ;
    articlesbuttondown     = new Image() ;
    articlesbuttondown.src = "/index_files/mb_strona_artykuly_1.gif" ;	

    gallerybuttonup     = new Image();
    gallerybuttonup.src = "/index_files/mb_foto_galeria.gif" ;
    gallerybuttondown     = new Image() ;
    gallerybuttondown.src = "/index_files/mb_foto_galeria_1.gif" ;	

    forumbuttonup     = new Image();
    forumbuttonup.src = "/index_files/mb_forum.gif" ;
    forumbuttondown     = new Image() ;
    forumbuttondown.src = "/index_files/mb_forum_1.gif" ;	

    adsbuttonup     = new Image();
    adsbuttonup.src = "/index_files/mb_og_oszenia.gif" ;
    adsbuttondown     = new Image() ;
    adsbuttondown.src = "/index_files/mb_og_oszenia_1.gif" ;	
	
	partnersbuttonup     = new Image();
    partnersbuttonup.src = "/index_files/mb_partnerzy.gif" ;
    partnersbuttondown     = new Image() ;
    partnersbuttondown.src = "/index_files/mb_partnerzy_1.gif" ;	

	contactbuttonup     = new Image();
    contactbuttonup.src = "/index_files/mb_kontakt.gif" ;
    contactbuttondown     = new Image() ;
    contactbuttondown.src = "/index_files/mb_kontakt_1.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" );
    }
}