battleGround:{
			"class":Travian.Game.Map.Layer.Symbol.BattleGround,imgSource:"img/map/battleground/battleground-{center}-{north}-{east}-{south}-{west}-{width}x{height}.png",zIndex:9,visibleInZoom:{1:true,2:true,3:false,4:false},sizes:{1:{width:16,height:16},2:{width:8,height:8},3:{width:4,height:4},4:{width:4,height:4}}},adventure:{"class":Travian.Game.Map.Layer.Symbol.Adventure,imgSource:"img/map/adventure/difficulty-{difficulty}/{width}x{height}.png",zIndex:10,visibleInZoom:{1:true,2:true,3:false,4:false},sizes:{1:{width:16,height:16},2:{width:8,height:8},3:{width:6,height:6},4:{width:4,height:4}}}};