Prevent Box handler from cancelling the click event by displaying the box only when the cursor move, p=me, r=elemoine (Closes #2993)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10996 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Handler/Box.js

@@ -90,7 +90,7 @@ OpenLayers.Handler.Box = OpenLayers.Class(OpenLayers.Handler, {
     */
     startBox: function (xy) {
         this.zoomBox = OpenLayers.Util.createDiv('zoomBox',
-                                                 this.dragHandler.start);
+             new OpenLayers.Pixel(-9999, -9999));
         this.zoomBox.className = this.boxDivClassName;                                         
         this.zoomBox.style.zIndex = this.map.Z_INDEX_BASE["Popup"] - 1;
         this.map.viewPortDiv.appendChild(this.zoomBox);