#Ebene4 ul {
   position:absolute;
   left:0px;
   top:1px;
   width:100%;
   z-index:99;
   padding:0;
   margin:0;
   list-style-type:none;
}
#Ebene4 ul li {
   float:left;
   margin-right:15px;
   position:relative;
}

.Dropdowns {
   position:absolute;
   left:0px;
   top:25px;
   width:1280px;
   height:25px;
   //background-color:red;
   visibility:hidden;
   }
.Dropdowns ul {
   padding:0;
   margin:0;
   list-style-type:none;
}
.Dropdowns li {
   position:relative;
}
#Ebene4 ul li:hover ul,
#Ebene4 ul a:hover ul{
   visibility:visible; 
}
.Dropdowns ul li:hover ul,
.Dropdowns ul a:hover ul{
   visibility:visible; 
}
.Dropdowns ul :hover ul ul{
   visibility:hidden;
}
.Dropdowns ul :hover ul :hover ul ul{
   visibility:hidden;
}
.Dropdowns ul :hover ul :hover ul{ 
   visibility:visible;
}
.Dropdowns ul :hover ul :hover ul :hover ul { 
   visibility:visible;
}