title: jQuery Tablesorter is not working with date
body: <p>My code:</p>
  
  <p><code>&lt;th class="sorter-shortDate"&gt;Date&lt;/th&gt;</code>
  <code>$('table').tablesorter({dateFormat: "yyyymmdd"});</code></p>
  
  <p>Sorting is working on numbers, but it is not working on dates,
  My date format is <code>y-m-d H:i</code>,
  I also tried to add custom parser:</p>
  
  <pre><code>$.tablesorter.addParser({
      id: "customDate",
      is: function(s) {
            return false;
            //use the above line if you don't want table sorter to auto detected this parser
            //else use the below line.
            //attention: doesn't check for invalid stuff
            //2009-77-77 77:77:77.0 would also be matched
            //if that doesn't suit you alter the regex to be more restrictive
            //return /\d{1,4}-\d{1,2}-\d{1,2} \d{1,2}:\d{1,2}/.test(s);
      },
      format: function(s) {
            s = s.replace(/\-/g," ");
            s = s.replace(/:/g," ");
            s = s.replace(/\./g," ");
            s = s.split(" ");
            return $.tablesorter.formatFloat(new Date(s[0], s[1]-1, s[2], s[3]).getTime()+parseInt(s[6]));
      },
      type: "numeric"
  });
  </code></pre>
  
  <p>Can anyone help me please?</p>