Applied patch from Corey Puffault, checking for left click only in mouse toolbar, fixing #101.

git-svn-id: http://svn.openlayers.org/branches/openlayers/1.0@769 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/MouseToolbar.js

@@ -96,6 +96,7 @@ OpenLayers.Control.MouseToolbar.prototype =
     * @param {Event} evt
     */
     defaultMouseDown: function (evt) {
+        if (!Event.isLeftClick(evt)) return;
         this.mouseDragStart = evt.xy.copyOf();
         if (evt.shiftKey && this.mode !="zoombox") {
             this.switchModeTo("zoombox");
@@ -226,6 +227,7 @@ OpenLayers.Control.MouseToolbar.prototype =
     * @param {Event} evt
     */
     defaultMouseUp: function (evt) {
+        if (!Event.isLeftClick(evt)) return;
         switch (this.mode) {
             case "zoombox":
                 var start = this.map.getLonLatFromViewPortPx( this.mouseDragStart );