Точка доступа карты изображения не работает должным образом в Internet Explorer

http://www.ssp-odense.dk/

когда вы нажимаете на область «korup», точка доступа регистрируется только в верхней части области. Функция наведения точки доступа для korup должна регистрировать курсор в нижней части области 'Korup'. Он отлично работает в firefox и google chrome, при этом вся область горячих точек активирует функцию наведения мыши. Я не знаю, почему это не работает. Я позаботился о том, чтобы использовать #hashtag в теге имени карты.

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