Fix mistake in documentation: idx -> delta. Reported by aboudreault on IRC,

no functional change.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@7190 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -954,7 +954,7 @@ OpenLayers.Map = OpenLayers.Class({
      *
      * Paremeters:
      * layer - {<OpenLayers.Layer>} 
-     * idx - {int} 
+     * delta - {int} 
      */
     raiseLayer: function (layer, delta) {
         var idx = this.getLayerIndex(layer) + delta;