public MyMap(String mapName,String size,String mapUrl){
  init();
  this.mapName=mapName;
  this.size=size;
  initStatus();
  setUrl(mapUrl + mapName + ".ghz");
  generateContinentName(mapName);
}

public MyMap ( String mapName , String size , String mapUrl ) { init ( ) ; this . mapName = mapName ; this . size = size ; initStatus ( ) ; setUrl ( mapUrl + mapName + ".ghz" ) ; generateContinentName ( mapName ) ; }
generate mymap for download list
