function _fireBlockLayerStateChange (mParams) {
		if (Popup._blockLayerStateProvider) {
			Popup._blockLayerStateProvider.fireEvent("blockLayerStateChange", mParams);
		}
	}
Triggers the static 'blockLayerStateChange' event with a given map of parameters.

@param {object} mParams A map of parameters with which the event gets fired.

@private