Button selected visible only with Interner Explorer

[barabba66]

Hi guys,
my button should remain selected when pressed, but this is visible only on IE.
Here my CSS:

.bottonisez {
 	
-moz-box-shadow:inset 0px 1px 0px 0px #fce2c1;
 	-webkit-box-shadow:inset
 0px 1px 0px 0px #fce2c1;
 	box-shadow:inset 0px 1px 0px 0px #fce2c1;
 	
background:-webkit-gradient( linear, left top, left bottom, 
color-stop(0.05, #ffc477), color-stop(1, #fb9e25) );
 	
background:-moz-linear-gradient( center top, #ffc477 5%, #fb9e25 100% );

 	
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffc477',
 endColorstr='#fb9e25');
 	background-color:#ffc477;
 	

height: 15px;
 -moz-border-radius: 10px 10px 0px 0px;
	-webkit-border-top-left-radius: 10px;
	-webkit-border-top-right-radius: 10px;
	-webkit-border-bottom-right-radius: 0px;
	-webkit-border-bottom-left-radius: 0px;
	border-radius: 10px 10px 0px 0px;
 
	border:1px solid #eeb44f;
 	display:inline-block;
 	color:#ffffff;
 	
font-family:arial;
 	font-size:15px;
 	font-weight:bold;
 	padding:6px 
15px;
 	text-decoration:none;
 	text-shadow:1px 1px 0px #cc9f52;
}

.bottonisez:hover {
 	background:-webkit-gradient( linear, left top, left 
bottom, color-stop(0.05, #fb9e25), color-stop(1, #ffc477) );
 	
background:-moz-linear-gradient( center top, #fb9e25 5%, #ffc477 100% );

 	
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fb9e25',
 endColorstr='#ffc477');
 	background-color:#fb9e25;
}

.selected {
background-color: rgba(0, 0, 0, 0.0);
color: #ffffff;
}