Adding your own tweaks 

• Inside bootstrap.js ...

, show: function () {
    var pos = $.extend({}, this.$element.offset(), {
      height: this.$element[0].offsetHeight
    })

    this.$menu.css({
      top: pos.top + pos.height
    , left: pos.left
    })

    this.$menu.show()
    this.shown = true
    return this
  }