function childSelectSet(obj, isCity){
	if($(obj).val()!=""){
		searchApp.get_city_list(function(json){
			var str = "";
			var item = [];
			for(var ken = 0; json[0].length > ken; ken++){
				item = json[0][ken]["city"];
				for(var i = 0; item.length > i; i++){
					if(isCity && item[i]['id'] == $('select[name=plc]').attr("default")){
						str += '<option value="'+item[i]['id']+'" selected="selected">'+item[i]['name']+'</option>';
					}
					else{
						str += '<option value="'+item[i]['id']+'">'+item[i]['name']+'</option>';
					}
				}
			}
			$('select[name=plc]').html("");
			if($(obj).val()==""||$(obj).val()=="0"){
				$('select[name=plc]').val("");
			}else{
				$("select[name=plc]").html(str).show();
			}
		},$(obj).find(":selected").val());
	}else{
	}
}

$(function(){
	//onload
	if($('select[name=prf] option:selected').val()){
		childSelectSet($('select[name=prf]'), true);
	}

	$('select[name=prf]').change(function(){
		childSelectSet($(this), false);
	});
});