add: this.drawn = true; 
context:     moveTo:function(bounds, zoomChanged, dragging) {        OpenLayers.Layer.prototype.moveTo.apply(this, arguments);        if (zoomChanged) {            this.redraw();        }    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/5a3c861051a042932d50c02e9f70da4196a4253e/Markers.js/buggy/lib/OpenLayers/Layer/Markers.js