.trigger {
	background: url(../kentei/images/exercise_a.png) no-repeat;
	background-position:center;
	height:28px;
	margin-bottom:5px;
}

.trigger:hover {
	background: url(../kentei/images/exercise_b.png) no-repeat;
	background-position:center;
	height:28px;
}

.active {
	background: url(../kentei/images/exercise_c.png) no-repeat;
	background-position:center;
	height:28px;
}

.active:hover {
	background: url(../kentei/images/exercise_d.png) no-repeat;
	background-position:center;
	height:28px;
}
	

.toggle_container {
	background: #666666;
	color: #FFFFFF;
	margin-left:40px;
	margin-right:40px;
	padding: 10px;
	border: 5px solid #F3F1F1;
	font-weight: bold;
}