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diff --git a/misc/openlayers/lib/OpenLayers/Layer/PointTrack.js b/misc/openlayers/lib/OpenLayers/Layer/PointTrack.js
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+/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
+ * full list of contributors). Published under the 2-clause BSD license.
+ * See license.txt in the OpenLayers distribution or repository for the
+ * full text of the license. */
+
+/**
+ * @requires OpenLayers/Layer/Vector.js
+ */
+
+/**
+ * Class: OpenLayers.Layer.PointTrack
+ * Vector layer to display ordered point features as a line, creating one
+ * LineString feature for each pair of two points.
+ *
+ * Inherits from:
+ *  - <OpenLayers.Layer.Vector> 
+ */
+OpenLayers.Layer.PointTrack = OpenLayers.Class(OpenLayers.Layer.Vector, {
+  
+    /**
+     * APIProperty: dataFrom
+     *     {<OpenLayers.Layer.PointTrack.TARGET_NODE>} or
+     *     {<OpenLayers.Layer.PointTrack.SOURCE_NODE>} optional. If the lines
+     *     should get the data/attributes from one of the two points it is
+     *     composed of, which one should it be?
+     */
+    dataFrom: null,
+    
+    /**
+     * APIProperty: styleFrom
+     *     {<OpenLayers.Layer.PointTrack.TARGET_NODE>} or
+     *     {<OpenLayers.Layer.PointTrack.SOURCE_NODE>} optional. If the lines
+     *     should get the style from one of the two points it is composed of,
+     *     which one should it be?
+     */
+    styleFrom: null,
+    
+    /**
+     * Constructor: OpenLayers.PointTrack
+     * Constructor for a new OpenLayers.PointTrack instance.
+     *
+     * Parameters:
+     * name     - {String} name of the layer
+     * options  - {Object} Optional object with properties to tag onto the
+     *            instance.
+     */    
+        
+    /**
+     * APIMethod: addNodes
+     * Adds point features that will be used to create lines from, using point
+     * pairs. The first point of a pair will be the source node, the second
+     * will be the target node.
+     * 
+     * Parameters:
+     * pointFeatures - {Array(<OpenLayers.Feature>)}
+     * options - {Object}
+     * 
+     * Supported options:
+     * silent - {Boolean} true to suppress (before)feature(s)added events
+     */
+    addNodes: function(pointFeatures, options) {
+        if (pointFeatures.length < 2) {
+            throw new Error("At least two point features have to be added to " +
+                            "create a line from");
+        }
+        
+        var lines = new Array(pointFeatures.length-1);
+        
+        var pointFeature, startPoint, endPoint;
+        for(var i=0, len=pointFeatures.length; i<len; i++) {
+            pointFeature = pointFeatures[i];
+            endPoint = pointFeature.geometry;
+            
+            if (!endPoint) {
+              var lonlat = pointFeature.lonlat;
+              endPoint = new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat);
+            } else if(endPoint.CLASS_NAME != "OpenLayers.Geometry.Point") {
+                throw new TypeError("Only features with point geometries are supported.");
+            }
+            
+            if(i > 0) {
+                var attributes = (this.dataFrom != null) ?
+                        (pointFeatures[i+this.dataFrom].data ||
+                                pointFeatures[i+this.dataFrom].attributes) :
+                        null;
+                var style = (this.styleFrom != null) ?
+                        (pointFeatures[i+this.styleFrom].style) :
+                        null;
+                var line = new OpenLayers.Geometry.LineString([startPoint,
+                        endPoint]);
+                        
+                lines[i-1] = new OpenLayers.Feature.Vector(line, attributes,
+                    style);
+            }
+            
+            startPoint = endPoint;
+        }
+
+        this.addFeatures(lines, options);
+    },
+    
+    CLASS_NAME: "OpenLayers.Layer.PointTrack"
+});
+
+/**
+ * Constant: OpenLayers.Layer.PointTrack.SOURCE_NODE
+ * {Number} value for <OpenLayers.Layer.PointTrack.dataFrom> and
+ * <OpenLayers.Layer.PointTrack.styleFrom>
+ */
+OpenLayers.Layer.PointTrack.SOURCE_NODE = -1;
+
+/**
+ * Constant: OpenLayers.Layer.PointTrack.TARGET_NODE
+ * {Number} value for <OpenLayers.Layer.PointTrack.dataFrom> and
+ * <OpenLayers.Layer.PointTrack.styleFrom>
+ */
+OpenLayers.Layer.PointTrack.TARGET_NODE = 0;
+
+/**
+ * Constant: OpenLayers.Layer.PointTrack.dataFrom
+ * {Object} with the following keys - *deprecated*
+ * - SOURCE_NODE: take data/attributes from the source node of the line
+ * - TARGET_NODE: take data/attributes from the target node of the line
+ */
+OpenLayers.Layer.PointTrack.dataFrom = {'SOURCE_NODE': -1, 'TARGET_NODE': 0};