#mainNav  li.stm {
    background-image:url("/files/user_upload/navigation-background/stm/Haus_St_Marien_1601com_Menue.jpg");
}
#mainNav  li.grundschule {
    background-image:url("/files/user_upload/navigation-background/stm/Grundschule_MrPixel_Menue.jpg");
}
#mainNav  li.bfs {
    background-image:url("/files/user_upload/navigation-background/stm/Berufsfachschulen_HSM_MrPixel_Menue.jpg");
}
#mainNav  li.vuw {
    background-image:url("/files/user_upload/content_hsm/Haus_St_Marien_allgemein/Haus%20St.%20Marien%20Men%C3%BCbilder/Wohnheimzimmer_HSM_crop.jpg");
}
#mainNav  li.kita {
    background-image:url("/files/user_upload/navigation-background/stm/Kindertagesstaette_HSM_Stockphoto_Menue.jpg");
}