I'm displaying KML placemark data in Google Earth via a NetworkLink, and would like to keep the size of the KML down by not including the description text in the Placemarks' KML definitions. Instead, I would like to retrieve and embed remote HTML text (via an HTTP request) only when the balloon window is activated.
Is this possible? I know the description format can handle remote images, but is it possible to do this for a block of HTML-formatted text as well? Something like specifying a URL in the Placemark's KML definition that will be retrieved upon the display of the Placemark's balloon window.
you could try putting iframe there:
<iframe src="...."></iframe>
i am not sure if google earth allows remote sources to be included via iframe as this could be a possible security problem, though.