function getCities(lang) {
    var countryId = $("#country").val();

    $.ajax({
        url: "/ajax.php?req=getcities&id=" + countryId + "&lang=" + lang,
        success: function(data) {
            $("#city").html(data);
        }
    })
}

function getProjects(lang) {
    var cityId = $("#city").val();

    $.ajax({
        url: "/ajax.php?req=getprojects&id=" + cityId + "&lang=" + lang,
        success: function(data) {
            $("#area").html(data);
        }
    })
}