[Users] Checkboxes in Tree

[Sascha Müller]

Hi,

I want to display Baselayers depending from the scale.
If I use radioButtons, the user has to change the Baselayer manually.
With checkBoxes, every Baselayer can active and I can make it with Sld.

So, how can I change the radioButton into checkBoxes in the tree?

Thanks

Sascha