Topic: Showing selected categories

I want to use CN as event showing script..
I need that visitor on my site can choose which category to see..selecting a checkboxes of wanted category...clicking Submit button and that selected categories are shown...
Its instead search...

Checkboxes will be categories and subcategories...

Re: Showing selected categories

not sure what you want to do with that image, but how is this an actual CN problem?
Just make sure that the checkboxes have the correct id and then do something like

$_SESSION['cat'] = (isset($_POST['checked_cat'])?$_POST['checked_cat']: 'default category number here';

No need to make changes to CN.