div#nav     { text-align: left; margin: 90px 0px 0px; padding: 0px; width: 138px; height: 120px }
div#nav ul     { text-align: left; list-style-type: none; margin: 0; padding: 0; width: 138px; height: 120px }
div#nav li { text-align: left; margin: 0; padding: 0 }
div#nav li, div#nav a   { float: left; width: 138px; height: 20px }
div#nav a   { text-decoration: none; text-indent: -9000px; margin: 0px; padding: 0px 0 0; overflow: hidden }
li#mhome, li#mhome a  { background-image: url(img/sx_01.gif) }
li#mopere, li#mopere a  { background-image: url(img/sx_02.gif) }
li#mcuriosita, li#mcuriosita a  { background-image: url(img/sx_03.gif) }
li#mmostre, li#mmostre a { background-image: url(img/sx_04.gif) }
li#mcontatti, li#mcontatti a { background-image: url(img/sx_05.gif) }
li#mstoria, li#mstoria a  { background-image: url(img/sx_06.gif) }
#nav li, #nav a:hover  { background-position: 0 -20px }
body#home li#mhome a, body#opere li#mopere a, body#curiosita li#mcuriosita a, body#mostre li#mmostre a, body#contatti li#mcontatti a, body#storia li#mstoria a   { background-position: 0 -20px }