Multiple Google ReCaptcha on a simple page

HTML
<form>
    <h1>Form 1</h1>
    <div><input type="text" name="field1" placeholder="field1"></div>
    <div><input type="text" name="field2" placeholder="field2"></div>
    <div id="RecaptchaField1"></div>
    <div><input type="submit"></div>
</form>

<form>
    <h1>Form 2</h1>
    <div><input type="text" name="field3" placeholder="field3"></div>
    <div><input type="text" name="field4" placeholder="field4"></div>
    <div id="RecaptchaField2"></div>
    <div><input type="submit"></div>
</form>
JavaScript part
<script type="text/javascript">
    var CaptchaCallback = function(){
        grecaptcha.render('RecaptchaField1', {'sitekey' : '6Lc_your_site_key'});
        grecaptcha.render('RecaptchaField2', {'sitekey' : '6Lc_your_site_key'});
    };
</script>
recaptcha script url
<script src="//www.google.com/recaptcha/api.js?onload=CaptchaCallback&render=explicit" async defer></script>
Source

http://stackoverflow.com/questions/1241947/how-do-i-show-multiple-recaptchas-on-a-single-page

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