Código do botão +1

Código:

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botão:

<!-- Place this tag where you want the +1 button to render. -->

<div class="g-plusone" data-annotation="inline" data-width="300" data-href="http://lojahost.net"></div>

<!-- Place this tag after the last +1 button tag. -->

<script type="text/javascript">

  window.___gcfg = {lang: 'pt-BR'};

  (function() {

    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;

    po.src = 'https://apis.google.com/js/plusone.js';

    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);

  })();

</script>

Selo com perfil:

<!-- Place this tag where you want the widget to render. -->

<div class="g-page" data-href="//plus.google.com/108699602081150721127" data-rel="publisher"></div>

<!-- Place this tag after the last widget tag. -->

<script type="text/javascript">

  window.___gcfg = {lang: 'pt-BR'};

  (function() {

    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;

    po.src = 'https://apis.google.com/js/plusone.js';

    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);

  })();

</script>

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Exemplo: