cod.php
document.write('<div style="position: absolute; width: 100px; height: 44px; z-index: 1; left: 20px; top: 215px" id="ball"><iframe class="transparent" name="I2" scrolling="no" width="498" height="77" align="left"
src="http://cod.php?id=<?php print "$id"; ?>" onmouseout="clickmoreone();"></iframe></div>');
document.write('<SCRIPT LANGUAGE="JavaScript" src="http://мой сайт/clickunder.js"></SCRIPT>');
на сайте:
<script language="JavaScript" src="http://cod.php?id=1"></script>