鼠标经过tr时,改变tr当前背景颜色

示例如下：
复制代码 代码如下:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
<title>鼠标经过给tr换颜色</title>   
</head>
<body>
<table align="center" width="100%" border="1" cellspacing="1" cellpadding="1" >
  <tr style="cursor:hand " onmousemove="changeTrColor(this)">
    <td align="center">1</td>
    <td height="20">&nbsp;123</td>
    <td height="20">&nbsp;abvx</td>
    <td height="20">&nbsp;465465</td>
    <td height="20">546654654</td>
  </tr>
  <tr style="cursor:hand " onmousemove="changeTrColor(this)">
    <td align="center">1</td>
    <td height="20">&nbsp;123</td>
    <td height="20">&nbsp;abvx</td>
    <td height="20">&nbsp;465465</td>
    <td height="20">546654654</td>
  </tr>   
  <tr style="cursor:hand " onmousemove="changeTrColor(this)">
    <td align="center">1</td>
    <td height="20">&nbsp;123</td>
    <td height="20">&nbsp;abvx</td>
    <td height="20">&nbsp;465465</td>
    <td height="20">546654654</td>
  </tr>
</table>
<script type="text/javascript">
function changeTrColor(obj){   
    var _table=obj.parentNode;
    for (var i=0;i<_table.rows.length;i++){
        _table.rows[i].style.backgroundColor="";
    }   
    obj.style.backgroundColor="blue";
}
</script>
</form>
</body>
</html>