[gears-users] How to make IE download a blob?

[MG]

Hello!

I am using the following code to save a text file to a local computer:

                var srv = google.gears.factory.create('beta.localserver');
                var store = srv.createStore('mystore');
                var sResourceName = 'file.export';

                sResourceName = escape(sResourceName);

                if( store.isCaptured(sResourceName))
                        store.remove(sResourceName);

                store.captureBlob(blob, sResourceName, 
'application/octet-stream');

                window.open(sResourceName, '_blank');
                                setTimeout(function(){
                                        store.remove(sResourceName);
                                        callback(true);
                                }, 1000);

FF & Chrome properly open the save file/download window, but IE8 opens
the blob as text in a new browser window. Is there a way to force IE
to save the file instead of showing it in a window?

Thanks,
MG