<style type="text/css">
#tb tr {
background-color: expression(
this.sectionRowIndex % 2 == 0 ? "#fff" : "#efefef"
)
TableSelect: expression(
this.sectionRowIndex == 0 ? "" :
(
onmouseover = function()
{
this.style.backgroundColor="#69CDFF"
},
onmouseout = function()
{
var color
if(this.sectionRowIndex % 2 == 0){
color = "#fff"
} else {
color = "#efefef"
}
this.style.backgroundColor=color
}
)
)
}
</style>
table如下：
<body>
<table cellspacing="1" class="FindAreaTable1" ID="DataGrid1">
<tr>
<td>首行首列</td>
<td>首行</td>
<td>首行</td>
<td>首行</td>
<td>首行</td>
<td>首行</td>
</tr>
<tr>
<td>行1首列</td>
<td>行1</td>
<td>行1</td>
<td>行1</td>
<td>行1</td>
<td>行1</td>
</tr>
<tr>
<td>行2首列</td>
<td>行2</td>
<td>行2</td>
<td>行2</td>
<td>行2</td>
<td>行2</td>
</tr>
<tr>
<td>行3首列</td>
<td>行3</td>
<td>行3</td>
<td>行3</td>
<td>行3</td>
<td>行3</td>
</tr>
<tr>
<td>行4首列</td>
<td>行4</td>
<td>行4</td>
<td>行4</td>
<td>行4</td>
<td>行4</td>
</tr>
<tr>
<td>行5首列</td>
<td>行5</td>
<td>行5</td>
<td>行5</td>
<td>行5</td>
<td>行5</td>
</tr>
</table>
</body>
</html>
css的选择符只能是从父到子，从上到下的顺序。
只有当b元素是a元素下面的兄弟元素，或者b元素是a元素的子元素的情况才能实现鼠标移到A上，A变红，B变蓝。
<style type="text/css">.a:hover { background-color: #f00 }
.a:hover~.b { background-color: #00f }
</style>
</head>
<body>
<div class="a">aaa</div>
<div class="b">bbb</div>
</body>
