Онлайн-оффлайн индикатор в списке тем

<xf:avatar user="$thread.User" size="s" defaultname="{$thread.username}" />

$0
                <xf:if is="$thread.User.isOnline()">
                    <span class="forum-avatar-online" data-xf-init="tooltip" data-original-title="Сейчас онлайн"></span>
                <xf:else />
                    <span class="forum-avatar-offline" data-xf-init="tooltip" data-original-title="Offline"></span>
                </xf:if>

.forum-avatar-online {
    background: #7fb900;
}
.forum-avatar-offline {
    background: #b90000;
}
.forum-avatar-online, .forum-avatar-offline {
    position: absolute;
    top: -2px;
    left: -2px;
    width: 12px;
    height: 12px;
    border: 2px solid #1f2b3b;
    border-radius: 50%;
}