Calendar.setup({
        inputField     :    "ajanlat_datum",     // id of the input field
        ifFormat       :    "%Y-%m-%d",      // format of the input field
        button         :    "ajanlat_datum",  // trigger for the calendar (button ID)
        align          :    "Bl",           // alignment (defaults to "Bl")
        singleClick    :    true
    });

    Calendar.setup({
        inputField     :    "ajanlat_datum",     // id of the input field
        ifFormat       :    "%Y-%m-%d",      // format of the input field
        button         :    "ajanlat_datumbutton",  // trigger for the calendar (button ID)
        align          :    "Bl",           // alignment (defaults to "Bl")
        singleClick    :    true
    });