CSS实现Tab

1、CSS

.card_blank_73 {
/* BACKGROUND-IMAGE:url(images/card_blank_bg_73.gif)*/; BORDER-BOTTOM: #ff7300 1px solid; overflow:hidden;
}
.card_normal_73 {
BORDER-RIGHT: #c2c2c2 1px solid; PADDING-RIGHT: 5px; BORDER-TOP: #c2c2c2 1px solid; PADDING-LEFT: 5px;/* BACKGROUND-IMAGE: url(images/card_normal_bg_73.gif);*/ PADDING-BOTTOM: 0px; BORDER-LEFT: #c2c2c2 1px solid; WIDTH: 90px; PADDING-TOP: 2px; BORDER-BOTTOM: #ff7300 1px solid; TEXT-ALIGN: center
}
.card_down_73 {
BORDER-RIGHT: #ff7300 2px solid; PADDING-RIGHT: 10px; BORDER-TOP: #ff7300 1px solid; PADDING-LEFT: 10px; FONT-WEIGHT: bold; FONT-SIZE: 14px;/* BACKGROUND-IMAGE: url(images/card_down_bg_73.gif);*/PADDING-BOTTOM: 0px; BORDER-LEFT: #ff7300 1px solid; WIDTH: 90px; COLOR: #333; PADDING-TOP: 3px; TEXT-ALIGN: center
}


2、实例

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>tab.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css" href="styles.css">

<script type="text/javascript">


function selectMenu(idv){
document.getElementById("menu"+idv).className = "card_down_73";

}
</script>
</head>

<body>
<table cellSpacing=0 cellPadding=0 width="100%">
<tr>
<td class="card_normal_73" id="menu0" onclick="selectMenu(0)>
<a href="#">Menu1</a>
</td>
<td class="card_normal_73" id="menu1" onclick="selectMenu(1)>
<a href="#">Menu2</a>
</td>
<td class="card_down_73" id="menu2" onclick="selectMenu(2)>
<a href="#">Menu3</a>
</td>
<td class="card_normal_73" id="menu3" onclick="selectMenu(3)>
<a href="#">Menu4</a>
</td>
</tr>
</table>
</body>
</html>
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