@charset "UTF-8"; /* 文字コード宣言 */

body {
	background-color: #EEEEEE;
}
a {
	text-decoration: none;
}
* {
	background-repeat: no-repeat;
}
#header {
	font-size: 0.8em;
}

div#sample1 {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	overflow: hidden;
}
#sample1 a:before {
	height: 50px;
	width: 250px;
	content: url("irway.png");
}
div#sample1_noimg {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	overflow: hidden;
}
#sample1_noimg a:before {
	height: 50px;
	width: 250px;
	background-image: url("none.png");
}

div#sample2 {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	overflow: hidden;
}
#sample2 a {
	display: list-item;
	list-style: disc inside url("irway.png");
}
div#sample2_noimg {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	overflow: hidden;
}
#sample2_noimg a {
	display: list-item;
	list-style: disc inside url("none.png");
}


body {
	position: relative;
	z-index: 1;
}

div#sample3 {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	position: relative;
	z-index: 2;
}
#sample3 a {
	height: 50px;
	width: 250px;
	display: block;
	background-image: url("irway.png");
	position: static;
	z-index: auto;
}
#sample3 span {
	position: relative;
	z-index: -1;
}

div#sample3_noimg {
	border: solid #333333 1px;
	height: 50px;
	width: 250px;
	position: relative;
	z-index: 2;
}
#sample3_noimg a {
	height: 50px;
	width: 250px;
	display: block;
	background-image: url("none.png");
	position: static;
	z-index: auto;
}
#sample3_noimg span {
	position: relative;
	z-index: -1;
}