.note{}
.unit{
	width:15px;
	height:15px;
	float:left;
	opacity:0;
	margin:1px;
}
.unit.circ{
	border-radius:13px;
	border:1px solid #bbb;
}
.unit.square{
	border:1px solid #bbb;
}
.unit.plain{
	background:#25aae1;
}
.unit.empty{
	background:#fff;
	border:1px solid #25aae1;
}