form action="http://www.google.co.jp/cse" id="cse-search-box">

 <div>
   <input type="hidden" name="cx" value="partner-pub-9871098573783862:ck133m-hl53" />
   <input type="hidden" name="ie" value="UTF-8" />
   <input type="text" name="q" size="20" />
   <input type="submit" name="sa" value="&#x691c;&#x7d22;" />
 </div>

/form>

script type="text/javascript" src="http://www.google.co.jp/cse/brand?form=cse-search-box&lang=ja"></script>