Problem with html validation

Hi, first of all thank for sharing this plugin for free.
The map style positioning of the plugin does not pass html validation, as “Element style not allowed as child of element body in this context.”
This is happening because $infobox_style->add_css($gmap_name) command in function generate_script() prints the css in the bottom of the body, along with javascript code.
This could be fixed if you exclude the css generation from wp_print_footer_scripts hook and add it in the head with another hook.

best regards,