add support for anchor-based permalink, p=sbrunner, r=me (closes #2785)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11170 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

examples/anchor-permalink.js

@@ -0,0 +1,13 @@
+function init() {
+    var map = new OpenLayers.Map({
+        div: "map",
+        projection: new OpenLayers.Projection("EPSG:900913"),
+        displayProjection: new OpenLayers.Projection("EPSG:4326"),
+        layers: [
+            new OpenLayers.Layer.OSM()
+        ]
+    });
+    if (!map.getCenter()) map.zoomToMaxExtent();
+
+    map.addControl(new OpenLayers.Control.Permalink({anchor: true}));
+}