document.write('<form action="http://www.google.com/cse" id="cse-search-box">');
document.write('<div>');
document.write('    <input type="hidden" name="cx" value="001598912058062909468:ui0ysj72d74" />');
document.write('    <input type="hidden" name="ie" value="ISO-8859-1" />');
document.write('    <input type="text" name="q" size="31" />');
document.write('    <input type="submit" name="sa" value="Buscar" />');
document.write('  </div>');
document.write('</form>');

document.write('<script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse-search-box&lang=es"></script>');