Радио Чат Софт

<style>
body { font-family: verdana, sans-serif; font-size:13px; }
a.vsl_help { text-decoration:none; color:#000; border-bottom:dashed 1px #000; }
a.vsl_help span { display:none;}
a.vsl_help:hover { position:relative; }
a.vsl_help:hover span { position:absolute; display:block; left:10px; top:-16px;
border:solid 1px #000; background:#ddd; color:#000; white-space:pre; padding:1px;}
</style>
<a href="#" class="vsl_help">[?]<span>Текст подсказки</span></a>