[mayanksinghal]

from: http://imgs.xkcd.com/clickdrag/1110.js

  var size=[14,48,25,33];
  var tilesize=2048;
  var map_size=[(size[1]+size[3])*tilesize,(size[0]+size[2])*tilesize];

So 165888x79872!!!

[zalew]

easier to find it here <div class="map" style="width: 165888px; height: 79872px; position: absolute; z-index: -1; left: -67645.4px; top: -27545.6px;">

[yread]

On my display it's 350 metres long...