function showDir(){
   window.open("map.html","map","height=524,width=475,status=no,location=no,menubar=no,toolbar=no,directories=no").focus();
}

function showLegend(){
   window.open("legend.php","colorcode","height=385,width=190,status=no,location=no,menubar=no,toolbar=no,directories=no").focus();
}