function calendar_setup_test() {


    if (document.getElementById('data1') && document.getElementById('trigger_data1')) {
        Calendar.setup({
            inputField     :    "data1",           //*
            ifFormat       :    "%Y-%m-%d",
            showsTime      :    false,
            button         :    "trigger_data1",        //*
            step           :    1
        });
    }

    if (document.getElementById('data2') && document.getElementById('trigger_data2')) {
        Calendar.setup({
            inputField     :    "data2",           //*
            ifFormat       :    "%Y-%m-%d",
            showsTime      :    false,
            button         :    "trigger_data2",        //*
            step           :    1
        });
    }
}

window.onload = calendar_setup_test;