/*special column types like wiki-date*/

jQuery.fn.dataTableExt.oSort['wiki_date-asc']  = function(a,b) {
      
  var ukDatea = a.split('/');
  var ukDateb = b.split('/');
      
    //Treat blank/non date formats as highest sort                
    if (isNaN(parseInt(ukDatea[0]))) {
        return 1;
    }
      
    if (isNaN(parseInt(ukDateb[0]))) {
        return -1;
    }
      
    var x = (ukDatea[2] + ukDatea[1] + ukDatea[0]) * 1;
    var y = (ukDateb[2] + ukDateb[1] + ukDateb[0]) * 1;
      
    return ((x < y) ? -1 : ((x > y) ?  1 : 0));
};
  
jQuery.fn.dataTableExt.oSort['wiki_date-desc'] = function(a,b) {
  var ukDatea = a.split('/');
  var ukDateb = b.split('/');
      
    //Treat blank/non date formats as highest sort                
    if (isNaN(parseInt(ukDatea[0]))) {
        return -1;
    }
      
    if (isNaN(parseInt(ukDateb[0]))) {
        return 1;
    }
      
    var x = (ukDatea[2] + ukDatea[1] + ukDatea[0]) * 1;
    var y = (ukDateb[2] + ukDateb[1] + ukDateb[0]) * 1;
      
    return ((x < y) ? 1 : ((x > y) ?  -1 : 0));
};
  
jQuery.fn.dataTableExt.aTypes.unshift(
    function ( sData )
    {
        if (sData !== null && sData.match(/^(0[1-9]|[12][0-9]|3[01])\/(0[1-9]|1[012])\/(19|20|21)\d\d$/))
        {
            return 'wiki_date';
        }
        return null;
    }
);