Nested Page Navigation

I am using WordPress as a CMS for a website am building.. I have pages arranged in this structure..

Parent 1
-> Sub Page 1
   -> -> Child 1
   -> -> Child 2
   -> -> Child 3
-> Sub Page 2
-> Sub Page 3 

Parent 2
-> Sub Page 1
   -> -> Child 1
   -> -> Child 2
   -> -> Child 3
-> Sub Page 2
-> Sub Page 3 

.....

I would like have a structure such that, on all immediate sub pages of Parent 1, Parent 2… For the still deeper pages i.e. child 1, child 2 etc… I want them to come in the menu as nested list items, which I can style seperately..

I am looking for a template function which can help me generate such a structure, coz am looking to generate DHTML sliders for Child 1, Child 2 etc…

Please help me out on this.. ?? Thanks ??