code: function(el) {
                  var id = el.id;
  
                  if (!id) {
                      id = "yuievtautoid-" + counter;
                      ++counter;
                      el.id = id;
                  }
  
                  return id;
              }
docs: Generates an unique ID for the element if it does not already
  have one.
  @method generateId
  @param el the element to create the id for
  @return {string} the resulting id of the element
  @static