a.expandable
{
 text-decoration:none; 
 color: #2040f0;
}

a.expandable:hover
{
 cursor:help;
 color: #3090ff;
}

a.expandable span
{ 
 visibility:hidden; 
 position: absolute;
 margin-top:1.5em;
 padding:1em;
 text-align: left;
}

a.expandable:hover span
{ 
 visibility:visible; 
 border:1px solid #c30;
 color: #000000;
 background-color: #ffffff;
}