Tool Tips

<style>
a:hover {
    background:#ffffff;
    text-decoration:none;
} 
a.tooltip span {
    display:none;
    padding:2px 3px;
    margin-left:8px;
    width:130px;
}
a.tooltip:hover span{
    display:inline;
    position:absolute;
    background:#ffffff;
    border:1px solid #cccccc;
    color:#6c6c6c;
}
</style>

Usage: Tool-tipped link This will appear in a tool-tip

<a class="tooltip" href="#">Tool-tip <span>This will appear in a tool-tip</span></a>