code: function _Overlay_findSiblings(commands) {
                      // Now make sure they're all in this container
                      var siblings = [];
                      var allCommands = this.element.querySelectorAll(".win-command");
                      var countAll, countIn;
                      for (countAll = 0; countAll < allCommands.length; countAll++) {
                          var found = false;
                          for (countIn = 0; countIn < commands.length; countIn++) {
                              if (commands[countIn] === allCommands[countAll]) {
                                  commands.splice(countIn, 1);
                                  found = true;
                                  break;
                              }
                          }
                          if (!found) {
                              siblings.push(allCommands[countAll]);
                          }
                      }
                      return siblings;
                  }
docs: Find siblings, all DOM elements now. Returns all .win-commands in this Overlay that are NOT in the passed in 'commands' array.