code: function getAllPanelIDs() {
          var property, panelIDs = [];
          for (property in panelIDMap) {
              if (panelIDMap.hasOwnProperty(property)) {
                  panelIDs.push(property);
              }
          }
          return panelIDs;
      }
docs: Returns an array of all panel ID's
  @returns {Array} List of ID's of all bottom panels