[Typo3] separate items in menu

[racco]

Hello!

I create my menu using TS:

# Menu 1 cObject
temp.menu_1 = HMENU
  # First level menu-object, textual
temp.menu_1.1 = TMENU
temp.menu_1.1 {
wrap = <div class="menu"> | </div>
ACT.allWrap = <div class="menuitemonMouseOver"> | </div>
NO.ATagBeforeWrap = 1
......
}
  # Second level menu-object, textual
temp.menu_1.2 = TMENU
temp.menu_1.2 {
.....
}


Is it possible to define somehow somekind of groups of those menu items?
Because in Frontend they go one after one, and I would like to have them 
grouped.

I was thinking about making special sites in the tree hierarchy, that would 
include those groups items, and then to do sth that TS would display only 
second level of this;
But I am not sure what will happen to site map in that way?

I mean sth like this

Now:

link1
link2
link3
link4
link5
link6
link7

I want:


link1
link2
-----
link3
link4
----
link5
link6
link7



possible??


greetings!
racco