Implementing upload progress bar with responds_to_parent

I am trying to implement an upload progress bar for an ajax file upload
implementation using

I basically have made use of responds_to_parent plugin as I am using an
old rails version of 2.0.2 for project specific purposes. I am also
making use of Ruby 1.8.7

I was able to find something to suit my requirement:
[RoR] Progress Bar Helper – , but due to
insufficient readme/support for this plugin I haven’t been able to get
this working yet.

The Rails version of this plugin has originated from:-

Can you kindly suggest other options which could come to my rescue,
something(JS) that would help me integrate the functionality with the
responds_to_parent plugin.