css opacity のまとめ
設定と解除
[sourcecode language=”java”]div:after{/*for modern browser*/
content:".";
display: block;
height:0px;
clear:both;
line-height:0;
visibility:hidden;
}
#submenu ul li a:hover{
background-position:0 -22px;
opacity:1;
filter: alpha(opacity=100 style=0);
background-color:#ffffff;
-moz-opacity:1;
} [/sourcecode]