.formula {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #999999;
	text-decoration: none;
}
a:hover {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 10px;
	color: #999999;
	text-decoration: underline;
}