在IE中可以让table高度与屏幕一样，为什么在火狐狸不行

在IE中可行，火狐里不行，为什么呢？

<!DOCTYPE html>
<head>
<meta charset="utf-8" />
<title>AAA</title>
</head>
<body>
<table id="table_test" width="100%" border="2">
  <tr>
    <td>
    <script type="text/javascript">
        <!--
        document.write("AAA",screen.availHeight,"BBB",screen.height);
    -->
    </script>
    </td>
  </tr>
</table>
<script type="text/javascript">
    <!--
    var height_table=screen.height-120;
    document.getElementById("table_test").height=height_table;
    -->
</script>
</body>
</html>

火狐和谷歌浏览器要用,CSS 设置高度

document.getElementById("table_test").style.height=height_table+"px";

你题目的解答代码如下：

<!DOCTYPE html>
<head>
<meta charset="utf-8" />
<title>AAA</title>
</head>
<body>
<table id="table_test" width="100%" border="2">
  <tr>
    <td>
    <script type="text/javascript">
        <!--
        document.write("AAA",screen.availHeight,"BBB",screen.height);
    -->
    </script>
    </td>
  </tr>
</table>
<script type="text/javascript">
    <!--
    var height_table=screen.height-120;
    document.getElementById("table_test").style.height=height_table+"px";
    -->
</script>
</body>
</html>

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