#menuPrincipal li a{
	color: #fff;
	display: block;
	font-weight: bold;
	padding: 0 7px 1px 6px;
	text-decoration: none;
}

#menuPrincipal li a:hover{
	color: #fff;
}

ul#menuPrincipal {
	position: relative;
}

ul#menuPrincipal li span {
	color: #fff;
	display: none;
	float: left;
	left: 0;
	padding: 1px 0;
	position: absolute;
	width: 750px;
}
ul#menuPrincipal li:hover span {
	display: block;
}

ul#menuPrincipal li span a {
	display: inline;
}

ul#menuPrincipal li span a:hover {
	text-decoration: underline;
}