rem: markers = null; 
add: this.markers = null; 
context:     destroy: function() {        this.clearMarkers();        markers = null;        OpenLayers.Layer.prototype.destroy.apply(this, arguments);    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/aea4747f89e93a6749e9062630862ece35214a27/Markers.js/clean/lib/OpenLayers/Layer/Markers.js