first steps towards usermaps

plugins/Mapstraction/usermap.js

@@ -0,0 +1,39 @@
+$(document).ready(function() {
+     var mapstraction = new mxn.Mapstraction("map_canvas", _provider);
+
+     var minLat = 181.0;
+     var maxLat = -181.0;
+     var minLon = 181.0;
+     var maxLon = -181.0;
+
+     for (var i in _notices)
+     {
+          var n = _notices[i];
+
+          var lat = n['geo']['coordinates'][0];
+          var lon = n['geo']['coordinates'][1];
+
+          if (lat < minLat) {
+               minLat = lat;
+          }
+
+          if (lat > maxLat) {
+               maxLat = lat;
+          }
+
+          if (lon < minLon) {
+               minLon = lon;
+          }
+
+          if (lon > maxLon) {
+               maxLon = lon;
+          }
+     }
+
+     var myPoint = new mxn.LatLonPoint(minLat + Math.abs(maxLat - minLat)/2,
+                                       minLon + Math.abs(maxLon - minLon)/2);
+
+     // display the map centered on a latitude and longitude (Google zoom levels)
+
+     mapstraction.setCenterAndZoom(myPoint, 9);
+});