opacity透明度

a{
	color: #ffffff;
	background-color: #dccf76;
	margin: 0 4px;
	padding: 2px 6px;
	font-weight: normal;
	text-shadow: none;
}

/*オンマウスでセレクタ全体の透明度が変わる*/
a:hover {
	opacity: .7;
	filter: alpha(opacity=70);        /* ie lt 8 */
	-ms-filter: "alpha(opacity=70)";  /* ie 8 */
	-moz-opacity:0.7;                 /* FF lt 1.5, Netscape */
	-khtml-opacity: 0.7;              /* Safari 1.x */
	text-decoration: none;
}