title: Change link parameter as select form changes
body: <p>I want to display 5 url links in a page, and I want a form with 3 select fields which will change url parameters according their selection.</p>
  
  <p>For example:</p>
  
  <pre><code>SELECT color: red / blue / green
  SELECT size: small / medium / large
  SELECT condition: new / used
  </code></pre>
  
  <p>So user specify values for the 3 select fields.</p>
  
  <p>Below selects, I will have 5 different URL links, which will get parameters from select fields.</p>
  
  <p>Example:</p>
  
  <pre><code>http://link-1.com/?color=xxx&amp;size=yyy&amp;condition=zzz
  http://link-2.com/?color=xxx&amp;size=yyy&amp;condition=zzz
  http://link-3.com/?color=xxx&amp;size=yyy&amp;condition=zzz
  http://link-4.com/?color=xxx&amp;size=yyy&amp;condition=zzz
  http://link-5.com/?color=xxx&amp;size=yyy&amp;condition=zzz
  </code></pre>
  
  <p>I need the url links changed automatically when user select field values. The xxx / yyy / zzz will be modified in to get field value, therefore after user select each option the parameters are changed on the fly, for example if user select "red / large / new" the urls must be: </p>
  
  <pre><code>http://link-1.com/?color=red&amp;size=large&amp;condition=new
  http://link-2.com/?color=red&amp;size=large&amp;condition=new
  http://link-3.com/?color=red&amp;size=large&amp;condition=new
  http://link-4.com/?color=red&amp;size=large&amp;condition=new
  http://link-5.com/?color=red&amp;size=large&amp;condition=new
  </code></pre>
  
  <p>So the links will be ready to be clicked according user's choice.</p>
  
  <p>How to do this?</p>