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Can you please show the site URL.
I'm using this plugin http://wordpress.org/plugins/geo-mashup/ with a custom post type.
When am trying to access http://www.vanwp.com/cgep/our-enterprises/how-we-create-enterprises/ , it automatically redirects to http://www.google.ca/ . Are you using any plugin for redirection?
Sorry. I've turned it off.
Do you want to add additional tool tip for that marker?
Which short code that you are using to display map?
I don't see why you would need to create an additional tooltip. Only a single tooltip per pin is needed. And it can be styled with CSS.
The shortcode being used is: [geo_mashup_map]
In the plugin settings I've chosen to only use a custom post type.