I don't think tooltips are for polygons are built-in to the API, but you can use e-labels to make (and style) your own: https://github.com/erunyon/ELabel
I believe people also use infobox, although there may be issues with that: http://google-maps-utility-library-v3.googlecode.com/svn/tags/infobox/1.0/docs/reference.html I haven't used either in v3 (but I used elabels in v2 and it was fine) so I can't say which is better -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to google-maps-js-api-v3@googlegroups.com. To unsubscribe from this group, send email to google-maps-js-api-v3+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.