语法：
Object.style.position=static|relative|absolute|fixed
可能的值
<!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=utf-8" />
<title>无标题文档</title>
<style type="text/css">
td{
width:60px;
height:59px;
}
.staticSpan{
position:static;
left:40px;
}
.relativeSpan{
position:relative;
top:20px;
left:20px;
}
.absoluteSpan{
position:absolute;
top:100px;
left:100px;
}
.fixedSpan{
position:fixed;
top:200px;
left:200px;
}
</style>
</head>
<body><table width="500" border="1" cellspacing="0" cellpadding="0">
<tr>
<td > </td>
<td><span class="staticSpan">static<span></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td height="47"> </td>
<td> </td>
<td><span class="relativeSpan">relative</span></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td height="41"> </td>
<td> </td>
<td><span class="absoluteSpan">absolute</span></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td height="35"> </td>
<td> </td>
<td> </td>
<td><span class="fixedSpan">fixed</span></td>
<td> </td>
</tr>
</table>
</body>
</html>
效果如下：
| static | ||||
| relative | ||||
| absolute | ||||
| fixed |