var numZoomLevels = Math.max(mapnik.numZoomLevels, osmarender.numZoomLevels);
- vectors = new OpenLayers.Layer.Vector("Vectors", {
- displayInLayerSwitcher: false,
- numZoomLevels: numZoomLevels,
- maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
- maxResolution: 156543,
- units: "m",
- projection: "EPSG:900913"
- });
- map.addLayer(vectors);
-
markers = new OpenLayers.Layer.Markers("Markers", {
displayInLayerSwitcher: false,
numZoomLevels: numZoomLevels,
}
function addBoxToMap(boxbounds) {
+ if(!vectors) {
+ // Be aware that IE requires Vector layers be initialised on page load, and not under deferred script conditions
+ vectors = new OpenLayers.Layer.Vector("Box Layer", {
+ displayInLayerSwitcher: false
+ });
+ map.addLayer(vectors);
+ }
var geometry = boxbounds.toGeometry().transform(epsg4326, map.getProjectionObject());
var box = new OpenLayers.Feature.Vector(geometry, {}, {
strokeWidth: 2,