yatony,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
.test {
background:#cccccc;
}
.test a {color: #fff;}
</style>
</head>
<body>
<div id="123" style="padding: 15px;">
<a href="#" onclick="document.getElementById('123').classList.toggle('test');facechange('.none'); return false;">Тыц</a>
<div class="none" style="font-family: sans-serif;text-align: left;">
<div class="t">
:write:
</div></div>
</div>
</body>
</html>