--- a/map.js	Fri Sep 04 16:16:10 2015 +0200
+++ b/map.js	Wed Oct 07 11:09:20 2015 +0200
@@ -5,18 +5,19 @@
 var overlayArray=[
 		{name:"provincial distribution of local monographs",
 			file:"China_Monograph_Project:monograph_distribution_prov_x",
-			preload:true
+			preload:false
 		},
-		{
+		/*{
 			name:"test",
 			file:"China_Monograph_Project:v5_citas90_pref_pgn_utf",
 			preload:false
-		},
+		},*/
 		{
 			name:"provincial capitals",
 			file:"China_Monograph_Project:all_monographs_capital_points",
 			preload:false
-		}];
+		}
+		];
 var datasetArray=[{name:"distribution of local monographs",
 			file:"./datasets/books_coordinates.csv",
 			preload:true
@@ -27,12 +28,31 @@
 			file:"./datasets/provincial_capital_coordinates.csv",
 			preload:false
 		}];
-var backgroundMapArray=[{
+var backgroundMapArray=[
+			/*{
 				name: 'Barrington Roman Empire',
-                        	url: 'http://pelagios.dme.ait.ac.at/tilesets/imperium/${z}/${x}/${y}.png',
-                        	type:'XYZ',
-                        	attribution: "(c) Barrington Roman Empiry, <a href='http://pelagios.dme.ait.ac.at/maps/greco-roman/'>Pelagios</a>"
-                         }];
+                url: 'http://pelagios.dme.ait.ac.at/tilesets/imperium/${z}/${x}/${y}.png',
+                type:'XYZ',
+                attribution: "(c) Barrington Roman Empiry, <a href='http://pelagios.dme.ait.ac.at/maps/greco-roman/'>Pelagios</a>"
+               },*/
+           {
+                name: '中國地形圖',
+        		url: 't/China/${z}/${x}/${y}.png',
+                type:'XYZ',
+                attribution: "(c) mpiwg-berlin, <a href='https://www.mpiwg-berlin.mpg.de'>Max Planck Institute for the History of Science</a>"
+           },
+           {
+                name: '陳正祥–蝗神廟之分佈',
+        		url: 't/pa-cha/${z}/${x}/${y}.png',
+                type:'XYZ',
+                attribution: "(c) 中國文化地理 陳正祥, <a href='https://zh.wikipedia.org/wiki/%E9%99%B3%E6%AD%A3%E7%A5%A5'>wikipedia</a>"
+        },{
+                name: '西元1820年 清朝 行政區',
+        		url: 'http://wmsproxy.appspot.com/map.jsp?l=China1820-png-${z}-${x}-${y}',
+                type:'XYZ',
+                attribution: "(c) NTU CSIE 303 Lab, <a href='http://archimedes.csie.ntu.edu.tw/lab_web1/'>NTU 303 Lab</a>"
+        }
+        ];
 var colorArray=[{//blue
                 r1 : 0,
                 g1 : 128,