def getPiconName(serviceName):
    sname = '_'.join(GetWithAlternative(serviceName).split(':', 10)[:10])
    pngname = findPicon(sname)
    if not pngname:
        fields = sname.split('_', 3)
        if len(fields) > 2 and fields[2] != '2':
            fields[2] = '1'
            pngname = findPicon('_'.join(fields))
    if not pngname:
        name = ServiceReference(serviceName).getServiceName()
        name = unicodedata.normalize('NFKD', unicode(name, 'utf_8', errors='ignore')).encode('ASCII', 'ignore')
        name = re.sub('[^a-z0-9]', '', name.replace('&', 'and').replace('+', 'plus').replace('*', 'star').lower())
        if name:
            pngname = findPicon(name)
            if not pngname and len(name) > 2 and name.endswith('hd'):
                pngname = findPicon(name[:-2])
    return pngname