// extract the datas (date components and the rest of the name) with regex expressions
var reDateMonth = /.*?(\d{1,2})-\d{1,2}-\d{2}.*/g;
var reDateDay = /.*?\d{1,2}-(\d{1,2})-\d{2}.*/g;
var reDateYear = /.*?\d{1,2}-\d{1,2}-(\d{2}).*/g;
var reExtra = /(.*?)\s?\d{1,2}-\d{1,2}-\d{2}\s?(.*)/g;
var resultMonth = item.newBasename.replace(reDateMonth, '$1');
var resultDay = item.newBasename.replace(reDateDay, '$1');
var resultYear = item.newBasename.replace(reDateYear, '$1');
var resultExtra = item.newBasename.replace(reExtra, '$1$2');

// add proper century to the year
if (resultYear >= 30 && resultYear <=99)  { resultYear = '19' + resultYear }
else                                      { resultYear = '20' + resultYear }
// padding month and day with a zero if necessary
resultMonth = (resultMonth < 10) ? ("0" + resultMonth) : resultMonth
resultDay = (resultDay < 10) ? ("0" + resultDay) : resultDay

return resultExtra  + ' ' + resultYear + '-' + resultMonth + '-' + resultDay;