1 files changed, 11 insertions, 0 deletions
diff --git a/static/main_map.js b/static/main_map.js
index 3ccf2b0..0ba7ebb 100644
--- a/static/main_map.js
+++ b/static/main_map.js
@@ -19,6 +19,17 @@ See the file COPYING for details.
 
 /* main map */
 
+/* check all the categories if clicked, unckeck if unclick */
+function checkAll(item, ids){
+    check = false;
+    if(item.checked == true){
+        check = true;
+    }
+    for (i in ids){
+        document.getElementById('category_'+ids[i]).checked = check;
+    }
+}
+
 /* show a block panel */
 function show(id){
     document.getElementById(id).style.display = 'block';