Hi,
I have started using your plugin, and wanting to get click area highlighting, have locally created a pseudo plugin that just pulls in and configures jquery.imagemapster. I found that jquery.rwdImageMaps conflicts with jquery.imagemapster and prevents its correct operation. Looking a bit deeper into the two jQuery plugins, it appears that jquery.rwdImageMaps provides just support for resizing the map definition, something already built into jquery.imagemapster.
Would you consider replacing jquery.rwdImageMaps with jquery.imagemapster to have the added functionality of highlighting of click areas?