效果：
代码：
<head runat="server">
<title></title>
<style type="text/css">
#backcolor
{
width: 400px;
height: 400px;
background: #FFFF00;
text-align: center;
border: ridge 30pt red;
margin: auto;
}
TD
{
border: ridge 3pt red;
width: 100px;
height: 100px;
}
div
{
width: auto;
height: 100px;
text-align: center;
line-height: 100px;
}
</style>
<script type="text/javascript">
window.onload = function () {
var divArry = document.getElementsByName('divname');
var divto = document.getElementById('div12');
var arry = ['春节', '情人节', '不知道有什么节日！', '清明节', '劳动节', '儿童节',
'好像这个月没有什么重大的节日吧！', '建军节', '教师节', '国庆节', '光棍节', '圣诞节'];
for (var i = 0; i < divArry.length; i++) {
divArry[i].index = i;
divArry[i].onmouseover = function () {
for (var i = 0; i < divArry.length; i++) {
divArry[i].style.background = '';
}
this.style.background = 'red';
divto.innerHTML = '<h3>' + this.innerHTML + arry[this.index] + '</h3>';
}
}
};
</script>
</head>
<body>
<table id="backcolor">
<tr>
<td>
<div id="div0" name="divname">
一月
</div>
</td>
<td>
<div id="div1" name="divname">
二月
</div>
</td>
<td>
<div id="div2" name="divname">
三月
</div>
</td>
<td>
<div id="div3" name="divname">
四月
</div>
</td>
</tr>
<tr>
<td>
<div id="div4" name="divname">
五月
</div>
</td>
<td>
<div id="div5" name="divname">
六月
</div>
</td>
<td>
<div id="div6" name="divname">
七月
</div>
</td>
<td>
<div id="div7" name="divname">
八月
</div>
</td>
</tr>
<tr>
<td>
<div id="div8" name="divname">
九月
</div>
</td>
<td>
<div id="div9" name="divname">
十月
</div>
</td>
<td>
<div id="div10" name="divname">
十一月
</div>
</td>
<td>
<div id="div11" name="divname">
十二月
</div>
</td>
</tr>
<tr>
<td colspan="4">
<div id="div12" style="width: 400px;">
</div>
</td>
</tr>
</table>
</body>