Redmine/app/views/repositories/_revision_graph.html.erb

<%= javascript_include_tag 'raphael.js' %>
<%= javascript_include_tag 'revision_graph.js' %>

<script type="text/javascript" charset="utf-8">
  Event.observe(window, 'load', function(){
    revisionGraph(
        document.getElementById("holder"),
        <%= commits.to_json.html_safe %>);
  });
</script>

<div id="holder" class="graph"></div>