Form.Element.Methods._replicate =  function(element) {
  element = $(element);
  if (element.replica) {
    element.replica.value = $F(element);
    var onReplicaChangeEvent = document.createEvent("UIEvents");
    onReplicaChangeEvent.initEvent("change", true, true);
    element.replica.dispatchEvent(onReplicaChangeEvent);
  }
}

Form.Element.Methods.assignReplica = function(element, otherInput) {
  element = $(element);
  if (!element._onChangeBound) {
    element.observe("change", element._replicate, false);
    element._onChangeBound = true;
  }
  element.replica = otherInput;
}

Form.Element.Methods.valueAsDate = function(element) {
  return $F(element).asDate();
}

Form.Element.Methods.setValueAsDate = function(element, dateValue) {
  element = $(element);
  if (!element.dateSeparator)
    element._detectDateSeparator();
  element.value = dateValue.stringWithSeparator(element.dateSeparator);
}

Form.Element.Methods.updateShadowValue = function(element) {
  element = $(element);
  element.setAttribute("shadow-value", $F(element));
}

Form.Element.Methods._detectDateSeparator = function(element) {
  element = $(element);
  var date = $F(element).split("/");
  if (date.length == 3)
    element.dateSeparator = "/";
  else
    element.dateSeparator = "-";
}

Form.Element.Methods.valueAsShortDateString = function(element) {
  element = $(element);
  var dateStr = '';
  
  if (!element.dateSeparator)
    element._detectDateSeparator();
  
  var date = $F(element).split(element.dateSeparator);
  if (element.dateSeparator == '/')
    dateStr += date[2] + date[1] + date[0];
  else
    dateStr += date[0] + date[1] + date[2];
  
  return dateStr;
}

Element.addMethods();