$(function(){
	$("select#id_distrito").change(function(){
        $("input#id_concelho").replaceWith('<select name="concelho" id="id_concelho"></select>');
	    var valor = $("#id_distrito").val();
	    $("select#id_concelho").html('<option value="">A carregar...</option>');
        $.getJSON("/frontend/json/search/" + valor + "/",
	    		function(data){
                    var options = "";
                    for (var i = 0; i < data.length; i++) {
                        options += '<option value="' + data[i].cod + '">' +
                            data[i].conc + '</option>';
                    }
                    $("select#id_concelho").html(options);

                });
    });
	
});