adding skeleton for anchored popup

git-svn-id: http://svn.openlayers.org/trunk/openlayers@333 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Popup/Anchored.js

@@ -0,0 +1,46 @@
+// @require: OpenLayers/Util.js
+
+/**
+* @class
+*/
+OpenLayers.Popup.Anchored = Class.create();
+OpenLayers.Popup.Anchored.prototype =
+   Object.extend( new OpenLayers.Popup(), {
+
+    /** 
+    * @constructor
+    * 
+    * @param {String} id
+    * @param {OpenLayers.LonLat} lonlat
+    * @param {OpenLayers.Size} size
+    * @param {String} contentHTML
+    */
+    initialize:function(id, lonlat, size, contentHTML) {
+        OpenLayers.Popup.prototype.initialize.apply(this, arguments);
+    },
+
+    /** 
+    */
+    destroy: function() {
+        OpenLayers.Popup.prototype.destroy.apply(this, arguments);
+    },
+
+    /** 
+    * @param {OpenLayers.Pixel} px
+    * 
+    * @returns Reference to a div that contains the drawn popup
+    * @type DOMElement
+    */
+    draw: function(px) {
+        OpenLayers.Popup.prototype.draw.apply(this, arguments);
+    },
+
+    /**
+    * @param {OpenLayers.Pixel} px
+    */
+    moveTo: function(px) {
+        OpenLayers.Popup.prototype.moveTo.apply(this, arguments);
+    },
+
+    CLASS_NAME: "OpenLayers.Popup.Anchored"
+});