Code for Adsense - Can you tell me what this code do ?

hello

i found this code in web site but i cant understand what this code do

<!-- begin ad tag -->
<script language="JavaScript" type="text/javascript">
ord=Math.random()*10000000000000000;
document.write('<scr' + 'ipt language="JavaScript" src="http://ad.doubleclick.net/adj/removed-tag/removed-location-data;dma=removed-num;org=removed-org-type;state=removed-state;own=removed-owner;sz=728x90;ord=' + ord + '?" type="text/javascript"></scr' + 'ipt>');
</script><noscript><a href="http://ad.doubleclick.net/jump/removed-tag/removed-location-data;dma=removed-num;org=removed-org-type;state=removed-state;own=removed-owner;sz=728x90;ord=123456789?" target="_blank"><img src="http://ad.doubleclick.net/ad/removed-tag/removed-location-data;dma=removed-number;org=removed-org-type;state=removed-state;own=removed-owner;sz=728x90;ord=123456789?" width="728" height="90" border="0" alt=""></a></noscript>
<!-- End ad tag -->

Code (markup):

i am waiting for js proffisonal

 

It creates a doubleclick ad? ..?