#bts_top {
	height: 40px;
	width: 590px;
	background-image: url(../img/topbtntab.jpg);
	background-repeat: no-repeat;
	background-position: left top;
	padding-right: 10px;
	margin-top: 20px;
}

#bts_top #bt1 {
	width: 100px;
	height: 40px;
	float: left;
	display: block;
	padding-right: 2px;
}
#bts_top #bt1 a {
	width: 100px;
	height: 40px;
	float: left;
	background-image:none;
	text-indent:-9999px;	
}
#bts_top #bt1 a:hover {
	width: 100px;
	height: 40px;
	float: left;
	background-image:url(../img/topbtntab.jpg);
	background-position: 0px -40px;
	text-indent:-9999px;
}
#bts_top #bt2 {
	width: 100px;
	height: 40px;
	float: left;
	display: block;
	padding-right: 2px;
}
#bts_top #bt2 a {
	width: 100px;
	height: 40px;
	float: left;
	background-image:none;
	text-indent:-9999px;	
}
#bts_top #bt2 a:hover {
	width: 100px;
	height: 40px;
	float: left;
	background-image:url(../img/topbtntab.jpg);
	background-position: -102px -40px;
	text-indent:-9999px;
}
#bts_top #bt3 {
	width: 100px;
	height: 40px;
	float: left;
	display: block;
}
#bts_top #bt3 a {
	width: 100px;
	height: 40px;
	float: left;
	background-image:none;
	text-indent:-9999px;	
}
#bts_top #bt3 a:hover {
	width: 100px;
	height: 40px;
	float: left;
	background-image:url(../img/topbtntab.jpg);
	background-position: -204px -40px;
	text-indent:-9999px;
}