Pop up blocker blocking new window

[kitten091182]

Hi, I have some code in my sidebox that when clicked should open a new window with information on the product of the page it is on. I have set it to target_blank and the pop up blocker is blocking it. I know that pop up blockers are meant to do that, but I have another piece of code with target_blank and the pop up blocker doesn't block it? I desperately need to get it to open in a new window if anybody could help me please? Here is a link to a product page on my site: http://www.drgreens.co.uk/Environmen...n-CO2-Analyser in the advice centre sidebox on the right, you will see the "Data Sheet" link that I am referring to. It is brought up by a piece of code in that sidebox which is:

<?php
/**
 * editable sidebox - allows a sidebox editable with the define pages editor to be added to your site
 *
 * @package templateSystem
 * @copyright 2007 Kuroi Web Design
  * @copyright Portions Copyright 2003-2007 Zen Cart Development Team
 * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version $Id: blank_sidebox.php 2007-08-10 kuroi $
 */
$content = '';
$content .= '<div id="' . str_replace('_', '-', $box_id . 'Content') . '" class="sideBoxContent">';
$content = file_get_contents($define_sidebox);
$content .= '<div class="adbox">'.$extra_field .'</div>';
$content .= '<div class="adbox">' .$current_categories_description_sub .'</div>' ;
$content .= '<div class="adbox">'.$products_file_1_link . '</div>' ;

  // this is where the content that you have via the Admin is pulled in.
$content .= '</div>';
?>

The link being $products_file_1_link. And that code pulls up the code in /includes/modules/pages/product_info/main_template_vars_product_type.php which is:

/*
 * extract info from queries for use as template-variables:
 */
 $extra_field  = $files->fields['extra_field'];
  $products_file_1_title = $files->fields['file_1_title'];
  $products_file_2_title = $files->fields['file_2_title'];
  $products_file_3_title = $files->fields['file_3_title'];
  $products_file_4_title = $files->fields['file_4_title'];
  $products_file_1       = $files->fields['file_1'];
  $products_file_2       = $files->fields['file_2'];
  $products_file_3       = $files->fields['file_3'];
  $products_file_4       = $files->fields['file_4'];
  $products_video       = $files->fields['video'];
  $products_video_title = $files->fields['video_title'];
if (!empty($products_video)) $products_video_link = '<a href="javascript:popupWindow(\''.zen_href_link(FILENAME_FLASH).'&id='.$_GET[products_id]. '\') ">'. $products_video_title . '</a>';
  
  if (!empty($products_file_1_title)) $products_file_1_link = '<a href="' . "product_extra_files/" . $products_file_1 . '"target="_blank">'. $products_file_1_title . '</a>';
  if (!empty($products_file_2_title)) $products_file_2_link = '<a href="' . "product_extra_files/" . $products_file_2 . '">'. $products_file_2_title . '</a>';
  if (!empty($products_file_3_title)) $products_file_3_link = '<a href="' . "product_extra_files/" . $products_file_3 . '">'. $products_file_3_title . '</a>';
   if (!empty($products_file_4_title)) $products_file_4_link = '<a href="' . "product_extra_files/" . $products_file_4 . '">'. $products_file_4_title . '</a>'; 

which is where the target=_blank reference is. Thanks