.sfondo_visibile_exp{

position:absolute; 
width:100%; 
height:100%; 
z-index:450; 
left: 0px; 
top: 0px;
background-color:#000000;
filter:Alpha(opacity=80);
/*visibility:visible*/
display:inline



}
.sfondo_visibile_mozz{

position:absolute; 
width:100%; 
height:100%;
z-index:450; 
left: 0px; 
top: 0px;
background-color:#000000;
opacity: 0.8;
/*visibility:visible*/
display:inline



}



	.nascosto{

position:absolute; 
width:10; 
height:10; 
z-index:500; 
left: -1500px; 
top: -1500px;
visibility:hidden
/*display:none*/



}