<!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>
<title>A</title>
</head>
<body>
<div>
A.htm
<input type="text" id="T1" size="20" />
<input type="button" value="送出↓" onclick="SendMsg()" />
<iframe src="b.htm" id="iframe" width="100%" height="100%"></iframe>
</div>
</body>
</html>
<script type="text/javascript">
function SendMsg()
{
var ifrmae = document.getElementById('iframe');
ifrmae.contentDocument.getElementById("T1").value = document.getElementById("T1").value;
}
</script>
iframe B.htm
<!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>
<title>B</title>
</head>
<body>
<div>
B.htm
<input type="text" id="T1" size="20" />
<input type="button" value="送出↑" onclick="SendMsg()" />
</div>
</body>
</html>
<script type="text/javascript">
function SendMsg()
{
parent.document.getElementById("T1").value = document.getElementById("T1").value;
}
</script>
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