WAD - Use one button to switch between visible and hidden

Hi all,

I have the following scenario:

1) The navigation pane is hidden by default in my web template

2) The user should be allowed to swich the status to visible by clicking on a button. This has been solved with a command of type SET_ITEM_PARAMETERS.

Is it now possible to use the same button to hide the navigation pane again (when the user clicks the button again) ? How is this solved ?

Thanks Mikkel