li#btn_1 a:link {
	background-image: url(../common/img/btn_1_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_1 a:visited {
	background-image: url(../common/img/btn_1_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_1 a:hover {
	background-image: url(../common/img/btn_1_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_2 a:link {
	background-image: url(../common/img/btn_2.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_2 a:visited {
	background-image: url(../common/img/btn_2.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_2 a:hover {
	background-image: url(../common/img/btn_2_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_3 a:link {
	background-image: url(../common/img/btn_3.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_3 a:visited {
	background-image: url(../common/img/btn_3.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_3 a:hover {
	background-image: url(../common/img/btn_3_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 180px;
}
li#btn_4 a:link {
	background-image: url(../common/img/btn_4.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 210px;
}
li#btn_4 a:visited {
	background-image: url(../common/img/btn_4.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 210px;
}
li#btn_4 a:hover {
	background-image: url(../common/img/btn_4_over.jpg);
	background-repeat: no-repeat;
	height: 50px;
	width: 210px;
}