test.php
<script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script> function show_images(link_id) { jQuery('#images_iframe').attr('src', 'images_iframe.php?link_id='+link_id); jQuery('#images_iframe').show(); } </script> <a onclick="show_images(link_id)" href="#">Show All Images</a> <iframe id="images_iframe" src="" style="left: 220px; top: 100px; display: none; position: fixed; width: 1200px; height: 700px; background-color: #fff;"></iframe>
images_iframe.php
<a style="float: right; text-decoration: none; font-family: Arial;" href="javascript: window.parent.document.getElementById('images_iframe').style.display='none'">X</a> <!-- iframe code -->