Enable/Disable all Placemarkgroups

Hi,
at the Moment i have more than 10 placemarksgroups on my site...growing

At the Backend i can decide which Group is activated b Default at the frontend of my site.
But is there a way the visitors can enable or disable with a singel click?
Just like they are selection each Group by hand?

Regards
Fenris

Sorry. What you mean. If you enable placemark group list management - they can have ability to show/hide placemarks to this group by one click

And if i have more than one Group, visitors can select multiple Groups to Show the placemarks assigned to the Groups they have selected.

if a visitor wants to see all placemarks, they have to click on each Group.
Or, if all Groups are selected visitors must click on each Group to de-select it.
Im looking for a easy way to select/deselect all groups

You want to have ability:
* Select All
* Clear All

by one click?

Yes

If I have time up to my vacation, I'll do it.
Now I'm developing rating ability for placemarks, and not have time to break to do what you want.