Technical
Easy Process Indicator

I was tired of pointing to process indicator every time i execute RJS action. This is what I found in RJS Templates For Rails

public/javascript/appcliation.js

Ajax.Responders.register({
  onCreate: function() {
    if (Ajax.activeRequestCount > 0)
      Element.show('process_indicator');
      //$('process_indicator').style.display = 'inline';
  },
  onComplete: function() {
    if (Ajax.activeRequestCount == 0)
      Element.hide('process_indicator');
    }
});

You can included image in the view or layout.

<div id="process_indicator" style="display:none">
  <%= image_tag 'spinner.gif',
               :id => 'spinner'%>
   <font>Loading</font>
</div>

Spinner: spiner.gif?