iframe框架内页： 

[quote]<html>

<head>

 <title>框架内页</title>

</head>

<body>

 <div>

 <input id="txt1" name="txt1" type="text" value="测试" />

 </div>

</body>

</html>

[/quote]

父级类：

[quote]<iframe name="frame1" id="frame1" src="frm.html" frameborder="1" height="30"></iframe>

<p>

 iframe1中文本框的值:</p>

<p>

 <input type="button" name="Submit" value="getValue" οnclick="getValue()" />

</p>


<script type="text/javascript">

function getValue(){

 var ofrm1 = document.getElementById("frame1").document; 

 if (ofrm1==undefined)

 {

 ofrm1 = document.getElementById("frame1").contentWindow.document;

 var ff = ofrm1.getElementById("txt1").value;

 alert("firefox/chrome取值结果为:" + ff);

 }

 else

 {

 var ie = document.frames["frame1"].document.getElementById("txt1").value;

 alert("ie取值结果为:" + ie);

 } 

}

</script>[/quote]