.cs1_lock_free a {
background: url(//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png) no-repeat;
background-position: right .1em center;
}
.cs1_lock_limited a,
.cs1_lock_registration a {
background: url(//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Lock-grey-alt-2.svg/9px-Lock-grey-alt-2.svg.png) no-repeat;
background-position: right .1em center;
}
.cs1_lock_subscription a {
background: url(//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png) no-repeat;
background-position: right .1em center;
}