ContactMap not work in "Tabs" and "Plain" modes

ContactMap on my Joomla! 3.3.6 site works only if Display format - Sliders selected in backend options of Contact manager.
For Display format - Tabs the map is partially shown.
If Display format - Plain selected, Error error "Floatbox does not support quirks mode. Page needs to have a valid doctype declaration." appears and many lines:
Warning: strpos() [function.strpos]: Empty needle in D:\OpenServer\domains\j3\plugins\system\contactmap\contactmap.php on line 68
Warning: strpos() [function.strpos]: Empty needle in D:\OpenServer\domains\j3\plugins\system\contactmap\contactmap.php on line 68
......
before the site content.