.ombre-droite {  background-image: url(img/popup/ombre_droite.gif); background-repeat: repeat-y; background-position: left center}
.ombre_bas {  background-image: url(img/popup/ombre_bas.gif); background-repeat: repeat-x; background-position: center top}
.ombre_cote {  background-image: url(img/popup/ombre_cote.gif); background-position: left top; background-repeat: no-repeat}
.ombre_fin_gauche {  background-image: url(img/popup/ombre_fin_gauche.gif); background-repeat: no-repeat; background-position: right top}