Changeset 122

Timestamp:

Oct 21, 2006, 11:43:35 PM (14 years ago)

Author:

David Sheldon

Message:

Ok, back button now works, but we should tidy up the links _to_ this page so they use # rather than ? (this will probably also improve caching)

File:

• trunk/npemap.org.uk/static/tiles/mapTiles.js (modified) (2 diffs)

trunk/npemap.org.uk/static/tiles/mapTiles.js

@@ -198 +198 @@
   size = 1000;
 
-        urlquery=location.href.split("?")
-        if (urlquery[1]) {
-                urlterms=urlquery[1].split(",")
-                offsetGridX = urlterms[0]-0 ; 
-                offsetGridY = urlterms[1]-0 ; 
-
-                if(urlterms.length > 2) {
-                        zoomLevel = urlterms[2]-0 ;
-                }
-        }
+  parseQueryString();
 
     prefix = prefixes[zoomLevel];
 }
+
+function parseQueryString() {
+  var hash = location.href.lastIndexOf('#');
+        var query = location.href.lastIndexOf("?")
+  var params = '';
+  if (hash != -1) {
+    params = location.href.substring(hash+1);
+  }
+  else if (query != -1) {
+    params = location.href.substring(query+1);
+  }
+  if (params.length > 0) {
+    urlterms=params.split(",")
+    offsetGridX = urlterms[0]-0 ; 
+    offsetGridY = urlterms[1]-0 ; 
+
+    if(urlterms.length > 2) {
+      zoomLevel = urlterms[2]-0 ;
+    }
+        }
+}
+
 
 // Need to use substring for IE, and it doesn't take negative numbers.
@@ -308 +321 @@
 
 function updatePermalink() {
-        document.getElementById("permalink").href = "?" + offsetGridX + "," + offsetGridY + "," + zoomLevel;
-}
-
+        document.getElementById("permalink").href = "#" + getLink();
+  location.href = '#'+getLink();
+  
+}
+
+function getLink() {
+  return offsetGridX + "," + offsetGridY + "," + zoomLevel;
+}
 
 function updateGrid(theDirection) {