#exemplo{
	position: absolute;
	top: 150;
	left: 50%;
	width : 780px;
	height : 535px;
	margin : 0px 0px 0px -390px;
	border: 0px dotted #f00;
}

.link {
	font: 9px Verdana;
	color: #000000;
}
	.by:link {
		text-decoration: none;
	}
	.by:active {
		text-decoration: none;
	}
	.by:visited {
		text-decoration: none;
	}
	.by:hover {
		color: #555555; 
		text-decoration: underline;
	}