title: Override og:description vía parameter?
body: <p>Lets say we have</p>
  
  <pre><code>&lt;head&gt;
  ..
  ..
  &lt;meta property="og:description" content="Default Description"/&gt;  
  ..
  &lt;/hea&gt;
  </code></pre>
  
  <p>And then</p>
  
  <pre><code>&lt;a onclick="var url=document.location.href; window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(url),'ventanacompartir', 'toolbar=0, status=0, width=650, height=450');"
   href="javascript: void(0);" id="fbCompartir" title="" class="mx"&gt;
            &lt;img alt="compartirFB" src="//d2p65vgzoeytng.cloudfront.net/nPromociones/producto/masNochesMasDescuento/img/icoPromoCompartirFacebook.gif"&gt;
  &lt;/a&gt;
  </code></pre>
  
  <p>As you can see i am sending to sharer.php vía u parameter the current url, how cand i send a custom text overriding the og:descripion? for example </p>
  
  <pre><code>&lt;a onclick="var url=document.location.href; window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(url)+'&amp;d='+$('#description').text(),'ventanacompartir', 'toolbar=0, status=0, width=650, height=450');"
   href="javascript: void(0);" id="fbCompartir" title="" class="mx"&gt;
            &lt;img alt="compartirFB" src="//d2p65vgzoeytng.cloudfront.net/nPromociones/producto/masNochesMasDescuento/img/icoPromoCompartirFacebook.gif"&gt;
  &lt;/a&gt;
  </code></pre>
  
  <p>This is just fiction but is there a way to do this?</p>