Hello,
I try your gpx viewer and its really nice. But I found a problem or it may be a bug. The plugin read the Zulu Time from the timestamp in the gpx file like this:
<time>2012-06-24T08:19:15Z</time>
But in real its +2h (europe, Norway, Germany) and there is no way to put a time offset for display the track. The problems comes up if you using NextGen Gallery to display pictures. The exif tag contains the propper +2h time and now we have a difference between track and picture. This result in missplacing the picture on a trackpoint +2h.
My offline editor for tracks (GPS-Traxk-Analyser.net V6) is able to handle this and calculate the propper time offset. I guess he get the offset from the coordinates (maybe).
One option would be a configurable time offset for the track in the plugin, the other option (would be nicer) is setting the offset automatic by look up the coordinates (I have no clue how to do this)