#mainNav  li.traeger {
    background-image:url("/files/user_upload/navigation-background/jokba/Jokba_20171024_2820_frei_Andreas_Bender_highres_565x425.jpg");
}
#mainNav  li.kliniken {
    background-image:url("/files/user_upload/navigation-background/jokba/jokba_nav_med.jpg");
}
#mainNav  li.patienten {
    background-image:url("/files/user_upload/navigation-background/jokba/jokba_nav_pat.jpg");
}
#mainNav  li.karriere {
    background-image:url("/files/user_upload/navigation-background/jokba/jokba_nav_karriere.jpg");
}