/* header - menu di navigazione principale */
ul#topnav {height:32px; margin:0; padding:0; top:115px; left:0px; position:absolute;}
ul#topnav li {float:left; list-style-type:none; background-image:url(/_layouts/AMI/images/menu/nav-sprite.gif);}
ul#topnav li a {display:block; text-decoration:none;}
ul#topnav li a:link {text-decoration:none;}
ul#topnav li a:visited {text-decoration:none;}
ul#topnav li a:hover {text-decoration:none;}
ul#topnav li a:active {text-decoration:none;}

/* ul#topnav .menu {top:31px; position:absolute; background:url(/_layouts/AMI/images/menu/bg-subnav.png) repeat-x bottom left; padding:0 0 12px 10px;}*/
ul#topnav .menu {top:31px; position:absolute; background:url(/_layouts/AMI/images/menu/bg-subnav.png) repeat-x bottom left;} 
ul#topnav .menu ul.sub_nav {float:left;}
ul#topnav .menu ul.sub_nav {margin:0 10px 0 0; padding:0; width:100%;}
ul#topnav .menu ul.sub_nav li {float:none; background-image:none;}
ul#topnav .menu ul.sub_nav li a, ul#topnav .menu ul.sub_nav li a:link, ul#topnav .menu ul.sub_nav li a:visited {font-size:11px; font-weight:normal; line-height:1.3em; color:#fff; text-decoration:none; padding:4px 6px; height:100%; background-color:transparent;}
ul#topnav .menu ul.sub_nav li a:hover { background-color:#1b3962; cursor:hand;}
ul#topnav .menu ul.sub_nav li a:active {color:#fff;  background-color:transparent;}

ul#topnav li .menu {display:none;}
ul#topnav li:hover .menu {display:block;}

ul#topnav li.nav_home_over .menu {display:block; width:280px; height:1%;left:0px; min-width:82px}
ul#topnav li.nav_mission_over .menu {display:block; width:425px; height:1%;left:82px; min-width:110px}
ul#topnav li.nav_org_over .menu {display:block; width:280px; height:1%;left:192px; min-width:160px}
ul#topnav li.nav_operations_over .menu {display:block; width:280px; height:1%;right:220px; min-width:132px}
ul#topnav li.nav_pers_over .menu {display:block; width:280px; height:1%;right:94px; min-width:126px}
ul#topnav li.nav_equipment_over .menu {display:block; width:280px; height:1%;right:-1px; min-width:94px}

ul#topnav a.nav_item span {position:absolute; left:-10000px; width:1px; height:1px; }

/* header - menu di navigazione principale  -  Voce HOME*/
li.nav_home {background-position:0px 0;height:33px;}
li.nav_home:hover, li.nav_home_over {background-position:0px -33px;}
li.nav_home a.nav_item, li.nav_home_over a.nav_item {width:82px; height:13px; margin-top:4px;}
li.nav_home div.menu {left:0px; min-width:82px}


/* header - menu di navigazione principale  -  Voce MISSIONE */
li.nav_mission {background-position:-82px 0;}
li.nav_mission:hover, li.nav_mission_over {background-position:-82px -33px;}
li.nav_mission a.nav_item, li.nav_mission_over a.nav_item {width:110px; height:33px;}
li.nav_mission div.menu {left:82px; min-width:110px}


/* header - menu di navigazione principale  -  Voce ORGANIZZAZIONE */
li.nav_org {background-position:-192px 0; margin-right:96px;}
li.nav_org:hover, li.nav_org_over {background-position:-192px -33px; margin-right:96px;}
li.nav_org a.nav_item, li.nav_org_over a.nav_item {width:160px; height:33px;}
li.nav_org div.menu {left:192px; min-width:160px}

/* header - menu di navigazione principale  -  Voce OPERAZIONI*/
li.nav_operations {background-position:-446px 0;}
li.nav_operations:hover,li.nav_operations_over {background-position:-446px -33px;}
li.nav_operations a.nav_item, li.nav_operations_over a.nav_item {width:132px; height:33px;}
li.nav_operations div.menu {right:220px; min-width:132px}

/* header - menu di navigazione principale  -  Voce PERSONALE */
li.nav_pers {background-position:-577px 0;}
li.nav_pers:hover, li.nav_pers_over {background-position:-577px -33px;}
li.nav_pers a.nav_item, li.nav_pers_over a.nav_item {width:126px; height:33px;}
li.nav_pers div.menu {right:94px; min-width:126px}

/* header - menu di navigazione principale  -  Voce MEZZI*/
li.nav_equipment {background-position:-710px 0;}
li.nav_equipment:hover, li.nav_equipment_over {background-position:-710px -33px;;}
li.nav_equipment a.nav_item, li.nav_equipment_over a.nav_item {width:94px; height:33px;}
li.nav_equipment div.menu {right:0px; min-width:94px}