http://www.ramonfincken.com/permalink/topic94.html

            <?php
               $mainframe = JFactory::getApplication();
               $meta = $mainframe->getCfg('MetaKeys');
               $metareplace = str_replace(',',' / ',$meta);
            ?>
            <script type="text/javascript" language="JavaScript">
                   // Meta keys from joomla into the template
                   // Author: Ramon Fincken
                   // http://www.ramonfincken.com/permalink/topic94.html
                   <?php
                   echo 'var meta = "'.$meta.'";';
                   echo "\n";
                   echo 'var metareplace = "'.$metareplace.'";';
                   echo "\n";
                   ?>
                   var keywordcount = meta.split(',').length;
                   if(meta.length < 100 || keywordcount < 5)
                   {
                      document.write(metareplace);
                   }
                   else
                   {
                      var metasplit = meta.split(',');
                      document.write(metasplit[0]+' / '+metasplit[1]+' / '+metasplit[2]+' / '+metasplit[3]+' / '+metasplit[4]);
                   }
             </script>
             <noscript>
                   <?php
                   echo $metareplace;
                   ?>
             </noscript>