rails server command generates error reoprt
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When I used `rails server` command, found following errors in terminal. It shows that "could not find a JavaScript runtime". I am newbie in ROR and don't know to configure different files. I Google and found solutions of this problem [1][1] [2][2] [3][3]. Still I am not getting the things. Please suggest some solutions.

![enter image description here][4]

Ruby and Rail versions on my system

Ruby version:- ruby 1.8.7 ,   Rails version:- Rails 3.2.6

  [1]: http://stackoverflow.com/questions/7356171/ruby-on-rails-error-running-rails-s-command
  [2]: http://stackoverflow.com/questions/5643229/rails-server-command-problem
  [3]: http://stackoverflow.com/questions/6633696/ruby-on-rails-server-command
  [4]: http://i.stack.imgur.com/BemZV.png