#main_img {
	background:url(../img/main_img.jpg) no-repeat;
	width:690px;
	height:218px;
}
#sub_img01 {
	background:url(../img/sub_img01.jpg) no-repeat;
	width:690px;
	height:367px;
	margin-top:30px;
}
#sub_img02 {
	background:url(../img/sub_img02.jpg) no-repeat;
	width:690px;
	height:365px;
	margin-top:30px;
}
#sub_img03 {
	background:url(../img/sub_img03.jpg) no-repeat;
	width:690px;
	height:344px;
}
#btn_syousai a {
	background:url(../img/btn_syousai.jpg) no-repeat;
	width:350px;
	height:90px;
	margin:30px auto 50px auto;
	display:block;
	text-decoration:none;
}
#btn_syousai a:hover {
	background-position: 0 -90px;
}