old_contents: define(
      'openOrchestraCss',
      function() {
          return {
              load:function(cssFilesArray){
                  for (cssFile of cssFilesArray) {
                      var link = document.createElement("link");
                      link.type = "text/css";
                      link.rel = "stylesheet";
                      link.href = cssFile;
                      document.getElementsByTagName("head")[0].appendChild(link);
                  }
              }
          };
      }
  );
  
new_contents: define(
      'openOrchestraCss',
      function() {
          return {
              load:function(cssFilesArray){
                  cssFilesArray.forEach(function (cssFile) {
                      var link = document.createElement("link");
                      link.type = "text/css";
                      link.rel = "stylesheet";
                      link.href = cssFile;
                      document.getElementsByTagName("head")[0].appendChild(link);
                  });
              }
          };
      }
  );
  
subject: fix ie11 slideshow (#238)