.home a {
	background-image: url(home02.gif);
	background-repeat: no-repeat;
	background-position: 0 0;
	width: 190px;
	height: 30px;
	float: left;
	display: block;
}
.home a:hover { background-color: #fff;/*IE6で動作させるために必要*/ }
.home a:hover img { visibility: hidden; }
.library a { background-image: url(library02.gif); background-repeat: no-repeat; background-position: 0 0; display: block; width: 190px; height: 30px; float: left; }
.library a:hover { background-color: #fff; }
.library a:hover img { visibility: hidden; }
.store a { background-image: url(store02.gif); background-repeat: no-repeat; background-position: 0 0; display: block; width: 190px; height: 30px; float: left; }
.store a:hover { background-color: #fff; }
.store a:hover img { visibility: hidden; }
.link a { background-image: url(link02.gif); background-repeat: no-repeat; background-position: 0 0; display: block; width: 190px; height: 30px; float: left; }
.link a:hover { background-color: #fff; }
.link a:hover img { visibility: hidden; }
.pic a { background-image: url(pic02.gif); background-repeat: no-repeat; background-position: 0 0; display: block; width: 190px; height: 30px; float: left; }
.pic a:hover { background-color: #fff; }
.pic a:hover img { visibility: hidden; }