> From: Lance Dyas
> 
> JSON is javascript (and typically implemented as JSONP .. 
> with a call back) it is cross domain and involves attaching a 
> script tag to the header...which the browser downloads and 
> processes...  it doesnt involve using xmlhttprequests its 
> what you saw in Jurgens post but you probably already figured 
> that out by now.

Just to be precise...

JSON is not executable JavaScript and cannot be used cross-domain without a
proxy.

JSONP with a callback is executable JavaScript that can be used
cross-domain.

Details in my other post from this morning:

http://groups.google.com/group/Google-Maps-API/msg/c5336d4e3286fb6b

-Mike


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