Chained Selects(Options) on Journal2 theme?

Is there anybody to help me to work "Chained Selects" with journal2?
It works with default theme but not with other theme.

There must be something to work that on Journal2.

What i need to add/edit in database(sql) and tpl files?

At least give me a clue. Please.


extension link:
http://www.opencart.com/index.php?route ... _license=0

I have written dependant option script for oc2 journal 2.

See demo at http://oc2.zastil.co.uk/index.php?route ... duct_id=50