Swfaddress on back removeChild

I have my site functioning with swfaddress, and external classes, nothing at all on the timeline.When Im navigating through pages it works well,linking works, backwad and all… So it works good while Im going FORWARD, but on eventual back button (browser button) how can I removeChild of current page (class) and and call previous page, and have it working as if Im going forward? In my case it calls previous page, but current page is still on display, I have dispose() methods for all classes, just how to call them in case of swfaddress.back() function? Again, no timeline, just external classes as3.