.a1 {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 12px;
	line-height: 20px;
	color: #000000;
	text-decoration: none;
}
.b1 {
	font-family: Arial, Helvetica, sans-serif;
	background-attachment: fixed;
	background-image: url(images/lr_02.jpg);
	background-repeat: no-repeat;
	background-position: bottom;
}
.b2 {
	background-attachment: fixed;
	background-image: url(images/zy_09.jpg);
	background-repeat: no-repeat;
	background-position: bottom;
}