.style1 {
	width: 760px;
	border: 1px solid #000000;
	background-color: #ffffff;
	margin-right: auto;
	margin-left: auto;
}
.style2 {
	text-align: left;
}
#nav_menu li {
	text-decoration: none;
	float: left;
	width: 100px;
	background-color: #384C8B;
	text-align: center;
	margin-right: 3px;
	margin-left: 3px;
	border: 2px solid #000000;
	list-style-type: none;
	vertical-align: bottom;
	height: 100px;
}
#nav_menu a {
	font-family: Arial, Helvetica, sans-serif;
	font-size: large;
	color: #FFFFFF;
	text-decoration: none;
	display: block;
	font-weight: bold;
	font-style: italic;
	width: 100px;
	height: 100px;
}
#nav_menu a:hover {
	background-image: url('tweety1.jpg');
	color: #FFFFFF;
	text-decoration: none;
	background-color: #CC6600;
	width: 100px;
	height: 100px;
}