#mainmenu   { width: 680px; height: 60px }
.menu01  { background-image: url("../img_eng/main_btn01.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu01 a   { text-decoration: none; background-image: url("../img_eng/main_btn01.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu01 a:hover   { text-decoration: none; background-image: url("../img_eng/main_btn01.gif"); background-repeat: no-repeat; background-position: -170px 0; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu02  { background-image: url("../img_eng/main_btn02.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu02 a   { text-decoration: none; background-image: url("../img_eng/main_btn02.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu02 a:hover   { text-decoration: none; background-image: url("../img_eng/main_btn02.gif"); background-repeat: no-repeat; background-position: -170px 0; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu03  { background-image: url("../img_eng/main_btn03.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu03 a   { text-decoration: none; background-image: url("../img_eng/main_btn03.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu03 a:hover   { text-decoration: none; background-image: url("../img_eng/main_btn03.gif"); background-repeat: no-repeat; background-position: -170px 0; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu04  { background-image: url("../img_eng/main_btn04.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu04 a   { text-decoration: none; background-image: url("../img_eng/main_btn04.gif"); background-repeat: no-repeat; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }
.menu04 a:hover   { text-decoration: none; background-image: url("../img_eng/main_btn04.gif"); background-repeat: no-repeat; background-position: -170px 0; text-indent: -7777px; display: block; width: 170px; height: 60px; float: left }