OSM = {
<% if defined?(PIWIK_LOCATION) and defined?(PIWIK_SITE) %>
  PIWIK_LOCATION:   <%= PIWIK_LOCATION.to_json %>,
  PIWIK_SITE:       <%= PIWIK_SITE.to_json %>,
<% end %>
  MAX_REQUEST_AREA: <%= MAX_REQUEST_AREA.to_json %>,
  SERVER_URL:       <%= SERVER_URL.to_json %>,
  API_VERSION:      <%= API_VERSION.to_json %>
};
