HSLayers.Control.ScaleSwitcher
==============================
`HSLayers.Control.ScaleSwitcher
<http://www.bnhelp.cz/wwwlibs/hslayers/3.0/doc/symbols/HSLayers.Control.ScaleSwitcher.html>`_
indicates current map scale and user can also change map scale directly. 

.. code-block:: javascript

    var switcher = new HSLayers.Control.ScaleSwitcher({
            div: this.mapViewer.mapPanel.scaleSwitcherContainer.container.dom
            });

    map.addControl(switcher);

The switcher will render combo box with :attr:`OpenLayers.Map.scales` or
scales derived from :attr:`OpenLayers.Map.resolutions` (which are actually
calculated based on attributes from :class:`OpenLayers.Map.baseLayer`).