Ajax is the default functionality from rail no need of extra packages,
ensure following things you have included
1)ensure rails.js in public/javascripts files if, you are using < 3.0.
if, you are using >3.0 then auto metically it will includes in
application.js(manifest file)
2) use :remote=> true in the link_for or form tags
ex:- <%=link_to 'Remote Link', home_path,:remote=>true%>
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G SubbaRao ( Ruby Developer )
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