/*  Copyright Mihai Bazon, 2002, 2003  |  http://dynarch.com/mishoo/
 * This script is distributed under the GNU Lesser General Public License.
 * Read the entire license text here: http://www.gnu.org/licenses/lgpl.html */
Calendar.setup = function (params) {
function param_default(pname, def) { if (typeof params[pname] == "undefined") { params[pname] = def; } };
param_default("inputField",     null);
param_default("displayArea",    null);
param_default("button",         null);
param_default("eventName",      "click");
param_default("ifFormat",       "%Y/%m/%d");
param_default("daFormat",       "%Y/%m/%d");
param_default("singleClick",    true);
param_default("disableFunc",    null);
param_default("dateStatusFunc", params["disableFunc"]);
param_default("dateText",       null);
param_default("firstDay",       null);
param_default("align",          "Br");
param_default("range",          [1900, 2999]);
param_default("weekNumbers",    true);
param_default("flat",           null);
param_default("flatCallback",   null);
param_default("onSelect",       null);
param_default("onClose",        null);
param_default("onUpdate",       null);
param_default("date",           null);
param_default("showsTime",      false);
param_default("timeFormat",     "24");
param_default("electric",       true);
param_default("step",           2);
param_default("position",       null);
param_default("cache",          false);
param_default("showOthers",     false);
param_default("multiple",       null);
var tmp = ["inputField", "displayArea", "button"];
for (var i in tmp) {
	if (typeof params[tmp[i]] == "string") {
		params[tmp[i]] = document.getElementById(params[tmp[i]]);
	}
}
if (!(params.flat || params.multiple || params.inputField || params.displayArea || params.button)) {
	alert("Calendar.setup:\n  Nothing to setup (no fields found).  Please check your code");
	return false;
}
function onSelect(cal) {
	var p = cal.params;
	var update = (cal.dateClicked || p.electric);
	if (update && p.inputField) {
		p.inputField.value = cal.date.print(p.ifFormat);
		if (typeof p.inputField.onchange == "function")
			p.inputField.onchange();
	}
	if (update && p.displayArea)
		p.displayArea.innerHTML = cal.date.print(p.daFormat);
		//computedDate = document.createTextNode(cal.date.print(p.daFormat));
           //p.displayArea.replaceChild(computedDate, p.displayArea.firstChild);
	if (update && typeof p.onUpdate == "function")
		p.onUpdate(cal);
	if (update && p.flat) {
		if (typeof p.flatCallback == "function")
			p.flatCallback(cal);
	}
	if (update && p.singleClick && cal.dateClicked)
		cal.callCloseHandler();
};
if (params.flat != null) {
	if (typeof params.flat == "string")
		params.flat = document.getElementById(params.flat);
	if (!params.flat) {
		alert("Calendar.setup:\n  Flat specified but can't find parent.");
		return false;
	}
	var cal = new Calendar(params.firstDay, params.date, params.onSelect || onSelect);
	cal.showsOtherMonths = params.showOthers;
	cal.showsTime = params.showsTime;
	cal.time24 = (params.timeFormat == "24");
	cal.params = params;
	cal.weekNumbers = params.weekNumbers;
	cal.setRange(params.range[0], params.range[1]);
	cal.setDateStatusHandler(params.dateStatusFunc);
	cal.getDateText = params.dateText;
	if (params.ifFormat) {
		cal.setDateFormat(params.ifFormat);
	}
	if (params.inputField && typeof params.inputField.value == "string") {
		cal.parseDate(params.inputField.value);
	}
	cal.create(params.flat);
	cal.show();
	return false;
}
var triggerEl = params.button || params.displayArea || params.inputField;
triggerEl["on" + params.eventName] = function() {
	var dateEl = params.inputField || params.displayArea;
	var dateFmt = params.inputField ? params.ifFormat : params.daFormat;
	var mustCreate = false;
	var cal = window.calendar;
	if (dateEl)
		params.date = Date.parseDate(dateEl.value || dateEl.innerHTML, dateFmt);
	if (!(cal && params.cache)) {
		window.calendar = cal = new Calendar(params.firstDay,
						     params.date,
						     params.onSelect || onSelect,
						     params.onClose || function(cal) { cal.hide(); });
		cal.showsTime = params.showsTime;
		cal.time24 = (params.timeFormat == "24");
		cal.weekNumbers = params.weekNumbers;
		mustCreate = true;
	} else {
		if (params.date)
			cal.setDate(params.date);
		cal.hide();
	}
	if (params.multiple) {
		cal.multiple = {};
		for (var i = params.multiple.length; --i >= 0;) {
			var d = params.multiple[i];
			var ds = d.print("%Y%m%d");
			cal.multiple[ds] = d;
		}
	}
	cal.showsOtherMonths = params.showOthers;
	cal.yearStep = params.step;
	cal.setRange(params.range[0], params.range[1]);
	cal.params = params;
	cal.setDateStatusHandler(params.dateStatusFunc);
	cal.getDateText = params.dateText;
	cal.setDateFormat(dateFmt);
	if (mustCreate)
		cal.create();
	cal.refresh();
	if (!params.position)
		cal.showAtElement(params.button || params.displayArea || params.inputField, params.align);
	else
		cal.showAt(params.position[0], params.position[1]);
	return false;
};
return cal;
};