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**Rotation parameter**

====== Rotation parameter ======

===== Pass Options =====

Default URLs like like http://domain/gallery/cool/index.html?12x34x567, where 12x34x567 is so called rotation parameter ie that's a way for the script to understand where a click happens (you can think of it as google's tracking parameters)

You have 3 options to work with it.

**1. You can use old style link like ** http://domain/gallery/cool/index.html?12x34x567 and that's a 100% guarantee that the rotation parameter will be passed to the script

**2. Pass it via AJAX call ** 
The parameter will be passed only if you have JS on. Which is good in some way.

Base template
<code>

<script type="text/javascript" src="/scj/includes/js/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
   $('a[rot_id]').each(function(){
      $(this).bind('click', function(){

         $.get('/scj/cgi/out.php',
            {
               'link': 'images/' + $(this).attr('rot_id'),
               'url': 'counter',
               'click_count': 'rotation_only'
            },
              function(data) {
              }
         );

      });
   });
});

</script>

<thumb num=1-10>
<a href="/gallery/<!--GALLERY_SLUG-->/index.html" target=_blank rot_id='<!--THUMB_LINK-->'> text </a>
<br>
</thumb>

</code>

**3. No rotation parameter at all** - that's a new one.

Rotation - Settings - **Use Magic Rotation Parameter** 

SmartCJ will try to guess where each click has been clicked and the script does it extremely good. Give it a try.


===== Link options =====

So let's see what link options we have for "magic rotation":

  - http://domain/gallery/cool/index.html - or any other rewrite. The main idea is to pass $_GET['slug'] = cool - so the script can guess the thumb by gallery's slug
  - cgi/out.php?url=http://domain/gallery/cool/index.html - pretty much the same as prev one , we have a gallery slug
  - cgi/out.php?url=/gallery/cool/index.html - the same as option 2
  - cgi/out.php?url=http://domain/gallery/cool/index.html&link=12x34x567 and cgi/out.php?url=/gallery/cool/index.html&link=12x34x567 also the same as 2
  - cgi/out.php?url=http://another_domain/somegallery/at/sponsor/host/index.html - if we have this url http://another_domain/somegallery/at/sponsor/host/index.html in our DB - script can detect the thumb, otherwise you need to use an old-style rotation parameter
  - cgi/out.php?url=http://master/gallery/cool/index.html&link=12x34x567 - we want to send to galleries at a master site and we don't have this  http://master/gallery/cool/index.html URL in DB - in this case we have to use old style rotation parameter

The rule of the thumb : a click can be counted if 
  - the script gets &slug=-..
  - the script gets &url=... and this url exists in DB
  - if you use old-slyle rotation parameter
  - you have &group_name or &group_id for category thumbs
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