Hi,

I'm using hello.js on a phonegap app and on windows phone the property (new XMLHttpRequest()).upload is undefined. We amended the code on hello.js line 1931 checking for the presence of the object before to append the onprogress listener, like this:

            if(x.upload) {
                x.upload.onprogress = function(e){
                    self.emit("uploadprogress", e);
                };
            }

small fix and everything seems to be working fine now.

Thanks for this awesome library ;)

Cheers.