I can't tell from your post or your attachment exactly what your code looks like (the attachment is full of backslashes and hex code). However, I am guessing that you're not closing the php tags before outputting your html. Here's a clearer example:
Code:
<!--bof Additional Product Images -->
<?php
/**
* display the products additional images
*/
require($template->get_template_dir('/tpl_modules_additional_images.php',DIR_WS_TEMPLATE , $current_page_base,'templates'). '/tpl_modules_additional_images.php'); ?>
<!--eof Additional Product Images -->
if ($_GET['products_id'] == 33) {
?>
<p align="center">
<button onclick="javascript:createplayer('http://www.thebasher.com/mediaplayer/playlist_featured.xml', true)">Featured Videos<br />
<img src="http://www.thebasher.com/mediaplayer/basher_tv/playlist_images/featured_video.jpg" alt="Featured Videos" width="100" height="100" /></button>
<?php
// continue with php code...
?>
Note the stuff highlighted in red.
Thanks for the blog kudos!