GraphicLayerSwitcher.js: Simplified layer divs
GraphicLayerSwitcher: Simplified CSS
GraphicLayerSwitcher: Simplified "current" style and HTML
GraphicLayerSwitcher: Removed unused ascending attribute
GraphicLayerSwitcher: Simplified CSS class assignment
GraphicLayerSwitcher: Renamed "on" variable to "layer_visible"
GraphicLayerSwitcher: Simplified layer_visible assignment
GraphicLayerSwitcher: Simplified jQuery selector code

No need to look up the elements all the time.
GraphicLayerSwitcher: Fixed gjslint issues

"line too long"
test_gjslint: Added GraphicLayerSwitcher.js to gjslint tests
GraphicLayerSwitcher: Added copyright notice

This component is obviously based on the on the original LayerSwitcher at https://github.com/openlayers/openlayers/blob/master/lib/OpenLayers/Control/LayerSwitcher.js
GraphicLayerSwitcher: Added original API comments
GraphicLayerSwitcher: Simplified checkRedraw() function
Merge pull request #22 from Turbo87/layer-switcher

Layer switcher code improvements