JQuery.js problem


In my view, I am showing password strength. I had added jquery.js in assets/javascripts. It worked. Then in the UI :- :confirm stopped working in button_to. I was wondering why. But today I came to know that in rails 3.0 & above jquery.js is not required. So I deleted it. But something wrong happened. now my password strength seems not to be working. & not redirecting.

Any solutions ?