On Jul 23, 3:24 pm, Mike Williams <[email protected]> wrote:
> It looks like you're preloading the infowindow contents before creating
> the map. Your infowindows contain huge images which are then scaled
> down. E.g.
>
> http://www.sundialsociety.org.uk/images/Kent/S3009.jpg
>
> is 685kb. The map doesn't get loaded until the "onload" event triggers,
> which occurs after all those 15 large images have been fetched.
>
> You end up displaying the image at 300x225 pixels, so you could save a
> lot of time by creating images of that size rather than 1648x2331. On a
> slow connection that could take quite a while.
>
> Skipping the preloading of the infowindow contents would also allow the
> map to display earlier in the proceedings. The downside would be that
> there would be the normal slight delay the first time each infowindow is
> opened as the image gets fetched, rather than the current instantaneous
> photo display.
>
> The underlay trick should work as long as your map div with underlay
> appears before you start preloading the infowindow contents, which
> appears to be the way you've got it configured. I don't know why that
> wouldn't work unless you repositioned your map div at the same tile that
> you added the underlay image.
>
> --
> Mike Williamshttp://econym.org.uk/gmap
Many thanks for that Mike. I changed the width to 400 (as per the
other images in the site) and the reported loading time went down from
60-90 seconds to about 20 seconds. We are likely to have up to 20
sundials in one location (e.g. mass dials scratched on church walls)
in the longer term, so populating the info windows at the time they
open is probably the way to go for the future.
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