javascript new window

[The Little Guy]

This code only works in FF, and not IE. Any know how to get it to work in both?

what it does is take the text from a field, and puts it into a link in a new window
Example link looks like this:
http://tzfiles.com/user_ok.php?user_name=ryan

[code]<script type="text/javaScript">
function check_user()
{
var userval=document.getElementById('user').value;
var load = window.open('user_ok.php?user_name='+userval,'','scrollbars=yes,menubar=no,height=100,width=200,resizable=no,toolbar=no,location=no,status=no');
}
</script>[/code]

Page its used on ("Check User Availability" link):
http://tzfiles.com/join.php

[nogray]

Try to use the same id and name for the user_name,
[code]
...
var userval=document.getElementById('user_name').value;
...
[/code]
[code]
...
<td><input type="text" id="user_name" name="user_name" value="">*</td>
...
[/code]