Corrected version of sample code from http://www.ebi.ac.uk/gxa/help/AtlasApis, using Haml

gxa-jsonp.haml

:javascript
  function processData(data) {
            if(data.error) {
                alert(data.error);
                return;
            }
            alert('Accession: ' + data.results[0].experimentInfo.accession + '\nDescription: ' + 
                                  data.results[0].experimentInfo.description);
        }

  function queryExperiment(experimentId) {
            var head = document.getElementsByTagName('head');
            var script = document.createElement('script');
            var atlasHomeUrl = "http://www.ebi.ac.uk/gxa";
            script.type = "text/javascript";
            script.src = atlasHomeUrl + "/api?experiment=" + escape(experimentId) + 
                                        "&format=json&callback=processData";
            head[0].appendChild(script);
        }


%input{:type => "button", :value => "Show experiment", :onclick => "queryExperiment('E-AFMX-1')"}