document.write('<center><a title="PayPerClick" target="_blank" href="http://www.clickna.ir/gobanner.php?user=educator&bID=59&c=4c4b22a19bdd4616a3ac3a0e1957b791"><img border="0" src="http://www.clickna.ir/banner/PayPerClick_19448_5.gif"></a><script src="http://clickna.ir/ran.js"></script>')