.n1 #m177 {
 background:url(../pic/n2-portrait.gif) no-repeat;
}
.n1 #m177 a:hover, .n1 #m177 a.akt{
 background: transparent url(../pic/n2-portrait.gif) 0 -19px no-repeat;
}
.n1 #m176 {
 background:url(../pic/n2-zahlen.gif) no-repeat;
}
.n1 #m176 a:hover, .n1 #m176 a.akt{
 background: transparent url(../pic/n2-zahlen.gif) 0 -19px no-repeat;
}
.n1 #m175 {
 background:url(../pic/n2-struktur.gif) no-repeat;
}
.n1 #m175 a:hover, .n1 #m175 a.akt{
 background: transparent url(../pic/n2-struktur.gif) 0 -19px no-repeat;
}
.n1 #m174 {
 background:url(../pic/n2-historie.gif) no-repeat;
}
.n1 #m174 a:hover, .n1 #m174 a.akt{
 background: transparent url(../pic/n2-historie.gif) 0 -19px no-repeat;
}