这个问题终于搞定了
1.htm
1:<input type=text id=page01 value=""><input type=button onclick=window.open('2.htm?id=page01') value="Test"><br>
2:<input type=text id=page02 value=""><input type=button onclick=window.open('2.htm?id=page02') value="Test"><br>
3:<input type=text id=page03 value=""><input type=button onclick=window.open('2.htm?id=page03') value="Test"><br>

2.htm
value:<input type=text id=page001 value="1" onclick="send(this.value);">
<input type=text id=page002 value="2" onclick="send(this.value);">
<input type=text id=page003 value="3" onclick="send(this.value);">

<script language="Javascript">
var URL = document.location.toString();
function send(what)
{
window.opener.document.getElementById((URL.substring(URL.lastIndexOf("?")+4,URL.length))).value=what;
}
</script>