fix for #682 - let the mouseup event go through on the panel, just like all other controls

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3106 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/Panel.js

@@ -129,6 +129,8 @@ OpenLayers.Control.Panel.prototype =
         // Give each control a panel_div which will be used later.
         // Access to this div is via the panel_div attribute of the 
         // control added to the panel.
+        // Also, stop mousedowns and clicks, but don't stop mouseup,
+        // since they need to pass through.
         for (var i = 0; i < controls.length; i++) {
             var element = document.createElement("div");
             var textNode = document.createTextNode(" ");
@@ -137,8 +139,6 @@ OpenLayers.Control.Panel.prototype =
                                      this.onClick.bind(this, controls[i]));
             OpenLayers.Event.observe(controls[i].panel_div, "mousedown", 
                               OpenLayers.Event.stop.bindAsEventListener());
-            OpenLayers.Event.observe(controls[i].panel_div, "mouseup", 
-                                  OpenLayers.Event.stop.bindAsEventListener());
         }    
 
         if (this.map) { // map.addControl() has already been called on the panel