A copier /coller dans le css sans modifié ,l'image représentée est l'image que vous allez voir en bouton dans le coin  du menubar 

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/164_zps8ef2bc58.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/164_zps8ef2bc58.gif"); width: Xpx; }

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/521_zpsfb478fb7.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/521_zpsfb478fb7.gif"); width: Xpx; }

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/607_zps60dd312a.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/607_zps60dd312a.gif"); width: Xpx; }

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/312_zps89bd9881.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/312_zps89bd9881.gif"); width: Xpx; }

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/162_zps5cc17338.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/162_zps5cc17338.gif"); width: Xpx; }

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/311_zps94a5dfd8.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/311_zps94a5dfd8.gif"); width: Xpx; }

A copié collé dans le css ! l'image que vous voyez est l'image que vous allez apercevoir ds le pt bouton du menubar

CSS

#menubar_hide { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/94_zpsdb4e5d5d.gif"); width: Xpx; } #menubar_show { background-image: url("http://i1087.photobucket.com/albums/j462/dreamcatcher41/SMALL%20GIFS/94_zpsdb4e5d5d.gif"); width: Xpx; }