Load an iframe from a popup

<script type="text/javascript">
<!--
function openWin(){
newWin=window.open("poppage.htm",'','left=430,top=100,width=300,height=200')
}
//-->
</script>

<a href="#null" onclick="openWin()">Open Popup</a>

<iframe name="iframe_name" src="iframepage.htm"></iframe>

<div id="display">Content</div>

<script type="text/javascript">
<!--
function updateIframe(){
opener.frames["iframe_name"].document.getElementById("display").innerHTML=document.forms["f1"]["t1"].value
}
//-->
</script>

<form name="f1">
<input type="text" name="t1" value="Hello World">
<input type="button" value="Test" onclick="updateIframe()">
</form>