// エリアデータ

var header = "<select name=\"area\" size=\"5\" id=\"area\">";
var footer = "</select>"

function changeTypes (pref_name) {

   if (pref_name == "") {
     pref_name = "すべて";
   }

   if (areas[pref_name]) {
     elem = document.getElementById("kind");
     elem.innerHTML = header + areas[pref_name] + footer;
   }

}