Here is a quite well written article about the XmlHttpRequest object,  
nothing stunningly new ...

http://code.google.com/support/bin/answer.py?answer=79663&topic=11366

except this was news to me:

http://code.google.com/support/bin/answer.py?answer=79663&topic=11366#scenario1

Apparently you can access responseStream member and assign it to an  
image src to do 'ajax' loading of images.  I'm wondering if this might  
provide more reliable error handling for tile loading.

Paul

+-----------------------------------------------------------------+
|Paul Spencer                          [EMAIL PROTECTED]    |
+-----------------------------------------------------------------+
|Chief Technology Officer                                         |
|DM Solutions Group Inc                http://www.dmsolutions.ca/ |
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