How to make it auto expand to certain level

I have a view with 4 levels of expansion,I will like to create a button, once click , it will autoexpand up to 3rd level only. Currently I have to got to each group and expand up to 3rd level only. Please help.

Subject: How to make it auto expand to certain level

Try appending &collapse=3 in your URL.

Probably this should work.

–Phani

Subject: RE: How to make it auto expand to certain level

But I am using notes client only, what other program codes are available?