ขอความช่วยเหลือเกี่ยวกับ javascript หน่อยค่ะ คือตอนนี้ติดปัญหาเกี่ยวกับ window.opener.

<script type="text/javascript">
function setContent () {
var toggle = document.getElementsByTagName('input');
var phone='';
for(i=0; i<toggle.length ;i++){
	if(toggle[i].type=='checkbox'){
		if(toggle[i].checked){
		phone+=toggle[i].value
		}
	}
}
window.opener.document.formsend.to_phone.value=phone;
window.close();
}
</script>
<form id="frmSelect" name="frmSelect" method="post" action="">
<?

$ru=mysql_query("select * from phonebook where username = '$username' ",$link);
$i=0;
while($data=mysql_fetch_array($ru)){

echo "<input type='checkbox'  value='".$data["phone"]."' />
".$data["name"]."
<br />";
$i++;
}

?>
<input type="button" name="button" id="button" value="Set Value" onclick="setContent()"/>
</form>