Hi John,

Thanks for the reply. We had considered using images but there are a
number of issues

i) We have thousands of different polygons
ii) They need to be coloured differently depending on results of a
database query
iii) We really need to handle polygon clicks.

We have code to simplify the polygons depending on the zoom level and
for the moment it seems OK even with IE even if it takes 20 seconds.
We just need to let the people viewing the maps that something is
happening until we see the polygons.


We may in the end have to look at tile based maps :(

Thanks

Anthony
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