title: jQuery give Url at contact form
body: <p>I do not know a lot about jquery, but I'm looking for a solution for this problem.
  I need to extrapolate the last parameter of the URL, if it is equal to "adv_source = AdWords" then I must return "AdWords", otherwise I must give "SEO".
  This is what I managed to do until now.
  Can anyone help me?</p>
  
  <pre><code>var url=jQuery('[_url]').val(); 
  
  if (url.search("adv_source=AdWords")) seoadwords = "Adwords";
  else seoadwords = "SEO";
  </code></pre>
  
  <p>Thanks in advance</p>