confused about date parsing

[Dan Santner]

My docs look something like this:

{
   "_id": "52e131783eb7a3.66772120",
   "_rev": "3-a734cbeb70ed87d5e84cd04c269149da",
   "billing": {
       "plan": "trial",
       "trialDays": 14,
       "trialEndDate": "2014-02-06 15:14:37",
       "nextDate": "",
       "stripeId": "",
       "cardId": "",
       "last4": "",
       "outstandingInvoice": "",
       "nextAmount": 0
   },
   "insightly": {
       "id": 50111485,
       "contactEmailId": 89501608,
       "contactPhoneId": 89501609
   },
 }

So I wrote a view to get all the docs where the trial end date has passed:

 "trialEnd": {
           "map": "function(doc){var outDoc = {}; 
                                var today = new Date(); 
                                outDoc.trialEnd = 
Date.parse(doc.billing.trialEndDate); 
                                outDoc.insightly = doc.insightly; 
                                outDoc.expiryAge = today - outDoc.trialEnd; 
                                emit(outDoc.expiryAge > 0,outDoc);}"
       }


And the parse obviously doesn't do what I think it does.  Help anyone?  I'm on 
bigcouch btw, but local couch 1.2 wouldn't do either.