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<html xmlns="
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<head>
<script type="text/javascript" src="jquery-1.6.2.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
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//如果规定显示行号，请用下面代码
//var showNumber=new Array(3,5,6,8);
//如果要显示中间几行，请用下面2行代码
middle=($("#table tr").length/2).toFixed(0);
var showNumber=new Array(middle,middle+1,middle-1);
$("#table tr").hide();
for(i=0;i<showNumber.length;i++){
$("#table tr:eq("+showNumber[i]+")").show();
}
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</head>
<body>
<table width="800" border="1" id="table">
<tr>
<td>0</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>1</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>2</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>3</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>4</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>6</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>7</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>8</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>9</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td>10</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
</body>
</html>