CSS鼠标经过另类做法

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS鼠标经过另类做法</title>
<link href="style/style.css" rel="stylesheet" type="text/css" />
</head>
<body>

<dl>
    <dd><a href="###" class="item1"></a></dd>
    <dd><a href="###" class="item2"></a></dd>
    <dd><a href="###" class="item3"></a></dd>
    <dd><a href="###" class="item4"></a></dd>
    <dd><a href="###" class="item5"></a></dd>
    <dd><a href="###" class="item6"></a></dd>
    <dd><a href="###" class="item7"></a></dd>
    <dd><a href="###" class="item8"></a></dd>
    <dd><a href="###" class="item9"></a></dd>
</dl>

</body>
</html>

CSS

dl,dd {
    margin:0;
    padding:0;
}
dl {
    width:300px;
    height:300px;
    background:url(../images/menu_gray.jpg) no-repeat;
}
dl dd {
    width:100px;
    height:100px;
    float:left;
}
dl dd a {
    width:100px;
    height:100px;
    display:block;
    background:url(../images/menu_color.jpg) no-repeat -9999px -9999px;
}
dl dd a.item1:hover {
    background-position:0 0;
}
dl dd a.item2:hover {
    background-position:-100px 0;
}
dl dd a.item3:hover {
    background-position:-200px 0;
}
dl dd a.item4:hover {
    background-position:0 -100px;
}
dl dd a.item5:hover {
    background-position:-100px -100px;
}
dl dd a.item6:hover {
    background-position:-200px -100px;
}
dl dd a.item7:hover {
    background-position:0 -200px;
}
dl dd a.item8:hover {
    background-position:-100px -200px;
}
dl dd a.item9:hover {
    background-position:-200px -200px;
}

效果图：