message: Fix view cover reset scrolling position
diff: show()
  {
  this.viewer.addClass("opened");
  - $("html,body").addClass("image-viewer-opened");
  + // $("html,body").addClass("image-viewer-opened");
  }
  hide()
  {
  this.viewer.removeClass("opened");
  - $("html,body").removeClass("image-viewer-opened");
  + // $("html,body").removeClass("image-viewer-opened");
  }
  }
  