$(function(){
var selectoptions = {
"北海道・東北":{
key:"北海道・東北",
values:{
"北海道":"北海道","青森":"青森","秋田":"秋田","岩手":"岩手","山形":"山形","宮城":"宮城","福島":"福島",
}
},
"関東":{
key:"関東",
values:{
"栃木":"栃木","茨城":"茨城","群馬":"群馬","埼玉":"埼玉","東京":"東京","千葉":"千葉","神奈川":"神奈川","山梨":"山梨","長野":"長野","新潟":"新潟",
}
},
"中部":{
key:"中部",
values:{
"石川":"石川","富山":"富山","福井":"福井","静岡":"静岡","愛知":"愛知","岐阜":"岐阜","三重":"三重",
}
},
"近畿":{
key:"近畿",
values:{
"京都":"京都","大阪":"大阪","奈良":"奈良","滋賀":"滋賀","和歌山":"和歌山","兵庫":"兵庫",
}
},
"中国":{
key:"中国",
values:{
"岡山":"岡山","広島":"広島","島根":"島根","鳥取":"鳥取","山口":"山口",
}
},
"四国":{
key:"四国",
values:{
"愛媛":"愛媛","徳島":"徳島","高知":"高知","香川":"香川",
}
},
"九州・沖縄":{
key:"九州・沖縄",
values:{
"福岡":"福岡","佐賀":"佐賀","大分":"大分","宮崎":"宮崎","熊本":"熊本","長崎":"長崎","鹿児島":"鹿児島","沖縄":"沖縄",
}
}
};

var options = {emptyOption: true, emptyValue:'エリア', emptyKey:''};
$('#area').doubleSelect('prefecture', selectoptions,options);
});