There's an issue with just that code snippet. You think that's it, but in looking at the code, it's not.
If you go to your example page (click on the Test 2 product) then look at the HTML for the more information button which is the little (?) button, correct?, it's something like:
<a href="javascript:popupWindow
('http://eterya.com/popup_info_help.php?osCsid=e1a5115313331da073b923ec3b5f6111')"><img src="images/help.gif" alt="" border="0"></a>
In your code, there should be a 'target="black"' attribute to the link. Here there isn't one. So here's what we need to find:
The popupWindow function.
Okay, so if you open up /catalog/product_info.php and look at the top, you'll see this:
<?php
/*
$Id: product_info.php,v 1.97 2003/07/01 14:34:54 hpdl Exp $
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com
Copyright (c) 2003 osCommerce
Released under the GNU General Public License
*/
require('includes/application_top.php');
require(DIR_WS_LANGUAGES . $language . '/' . FILENAME_PRODUCT_INFO);
$product_check_query = tep_db_query("select count(*) as total from " . TABLE_PRODUCTS . " p, " . TABLE_PRODUCTS_DESCRIPTION . " pd where p.products_status = '1' and p.products_id = '" . (int)$HTTP_GET_VARS['products_id'] . "' and pd.products_id = p.products_id and pd.language_id = '" . (int)$languages_id . "'");
$product_check = tep_db_fetch_array($product_check_query);
?>
<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN">
<html <?php echo HTML_PARAMS; ?>>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=<?php echo CHARSET; ?>">
<title><?php echo TITLE; ?></title>
<base href="<?php echo (($request_type == 'SSL') ? HTTPS_SERVER : HTTP_SERVER) . DIR_WS_CATALOG; ?>">
<link rel="stylesheet" type="text/css" href="stylesheet.css">
<script language="javascript"><!--
function popupWindow(url) {
window.open(url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=100,height=100,screenX=150,screenY=150,top=150,left=150')
}
//--></script>
</head>
Kaboom!! There's the function we need!! So, in looking at that, now what you need to do is compare the function information from the previous linked pages I gave you, and this one to see exactly how to make it do what you want.
[EDIT]
I do have to say, that from the looks of it, there should be nothing but just the window and the content (no statusbars, no toolbars). So if there is, then I think now it becomes an issue between the browsers, and not the javascript.
Okay, totally misunderstood you. But anyway, since you want to open it in a new window, just change the TEXT_MORE_INFORMATION variable to be
define('TEXT_MORE_INFORMATION', '<a href="javascript:popupWindow(\'%s\');">Klikk her</a>';
and that should open all more information links in a pop-up with no menubars and toolbars and such.