Somebody hacking to my wordpress

thank you for your answer

but, my adsense num is pub-7274817241953851

but, login page have a client number : pub-8994103544459729(720 size ads)

I never insert it. Hacking? or error?

I don’t know I need anyone help

and I fonud strange code :
————————————————————–

</body>
</noscript>
<div style=”text-align: center;”><div style=”position:relative; top:0; margin-right:auto;margin-left:auto; z-index:99999″>
<p> <script type=”text/javascript”><!–
google_ad_client = “pub-8994103544459729”;
/* 728×90, created 3/2/09 */
google_ad_slot = “0783542907”;
google_ad_width = 728;
google_ad_height = 90;
//–>
</script>

<script type=”text/javascript”
src=”http://pagead2.googlesyndication.com/pagead/show_ads.js”&gt;
</script> </p>
<p> <!–/* OpenX Javascript Tag v2.6.4 */–>

<script type=’text/javascript’><!–//<![CDATA[
var m3_u = (location.protocol==’https:’?’https://adserver.sevoiceanddata.com/www/delivery/ajs.php&#8217;:’http://adserver.sevoiceanddata.com/www/delivery/ajs.php&#8217;);
var m3_r = Math.floor(Math.random()*99999999999);
if (!document.MAX_used) document.MAX_used = ‘,’;
document.write (“<scr”+”ipt type=’text/javascript’ src='”+m3_u);
document.write (“?zoneid=8&target=_blank”);
document.write (‘&cb=’ + m3_r);
if (document.MAX_used != ‘,’) document.write (“&exclude=” + document.MAX_used);
document.write (document.charset ? ‘&charset=’+document.charset : (document.characterSet ? ‘&charset=’+document.characterSet : ”));
document.write (“&loc=” + escape(window.location));
if (document.referrer) document.write (“&referer=” + escape(document.referrer));
if (document.context) document.write (“&context=” + escape(document.context));
if (document.mmm_fo) document.write (“&mmm_fo=1”);
document.write (“‘></scr”+”ipt>”);
//]]>–></script> </p>
<p> <script type=”text/javascript”>
var gaJsHost = ((“https:” == document.location.protocol) ? “https://ssl.&#8221; : “http://www.&#8221;);
document.write(unescape(“%3Cscript src='” + gaJsHost + “google-analytics.com/ga.js’ type=’text/javascript’%3E%3C/script%3E”));
</script>
<script type=”text/javascript”>
try {
var pageTracker = _gat._getTracker(“UA-6259055-6”);
pageTracker._trackPageview();
} catch(err) {}</script> </p>
—————————————————————-
What is this?

I get it, right cilck and view souce code in this page(http://racegirl.info/wp/wp-login.php)