rem: setVisibility: function(visibility, noEvent) { 
add: setVisibility: function(visibility) { 
context:     setVisibility: function(visibility, noEvent) {        if (visibility != this.visibility) {            this.visibility = visibility;            this.display(visibility);            this.redraw();            if ((this.map != null) &&                 ((noEvent == null) || (noEvent == false))) {                this.map.events.triggerEvent("changelayer");            }        }    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/0e8e7ab620ec81e0909f04e0a03025090b347ff8/Layer.js/buggy/lib/OpenLayers/Layer.js