add: if ( (lon == null) || (lat == null) ) { var msg = "You must pass both lon and lat values " + "to the add function."; OpenLayers.Console.error(msg); return null; } 
context:     add:function(lon, lat) {        return new OpenLayers.LonLat(this.lon + lon, this.lat + lat);    },
meta: 8310	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8310/9dd9289f88aaa19fa7a64df6c5ca1d51c1669a3c/LonLat.js/clean/lib/OpenLayers/BaseTypes/LonLat.js