title: Google maps ImageMapType - what should getTileUrl return?
body: <p>I'm new to Google's <strong>ImageMapType</strong> and I'm trying to use it in order to display a custom map. </p>
  
  <p>I have one jpg image of a map I'd like to display. The image proportions are not exactly 1-1 with the world...</p>
  
  <p>I've read the API but I'm not sure what the <strong>getTileUrl</strong>(...) function should return - obviously it should return a link to the map image, but in all examples I saw the URL contained x and y coordinates as well as a zoom value. Does this mean that each tile url should have an image with a different part of the map? (meaning I need to create several images from my original map?)</p>
  
  <p>Thanks for the help,</p>
  
  <p>Li</p>