.mappa_visibile_mozz{

position:absolute; 
width:660px;
height:500px;
z-index:500;
left: 50%;
margin-left:-330;

visibility:visible



}
.mappa_visibile_exp{


position:absolute; 
width:660px;
height:500px;
z-index:500; 
left: 50%;
margin-left:-330;

display:inline



}



.chiudi_visibile_moz{

position:absolute;
z-index:800;
visibility:visible



}

.chiudi_visibile_exp{

position:absolute;
z-index:800;

display:inline




}