Ajax back [change state]

Anyone has an easy way to implement a back button on a ajax website. I nice easy step by step tutorial would be nice.

Hi,
I think you can some useful tutorials about ajax back buton in these search results: http://www.google.ro/#hl=ro&sugexp=kjrmc&cp=8&gs_id=w&xhr=t&q=ajax+back+button&pf=p&sclient=psy-ab&biw=1280&bih=676&source=hp&pbx=1&oq=ajax+bac&aq=0&aqi=g3&aql=f&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=faf0726ca02313ad

I have research this quite alot and what i need is help with the implementation I don’t seem to understand how t get these history files to work.