var fc_ie = false;
if (document.all) { fc_ie = true; }

var calendars = Array();
var fc_months = Array('Ene', 'Feb', 'Mar', 'Abr', 'May', 'Jun', 'Jul', 'Ago', 'Sep', 'Oct', 'Nov', 'Dic');
var fc_openCal;

var fc_calCount = 0;

function getCalendar(fieldId) {
return calendars[fieldId];
}

function displayCalendarFor(fieldId) {
var formElement = fc_getObj(fieldId);
displayCalendar(formElement);
}

function displayCalendar(formElement) {
if (!formElement.id) {
	formElement.id = fc_calCount++;
} 
var cal = calendars[formElement.id];
if (typeof(cal) == 'undefined') {
	cal = new floobleCalendar();
	cal.setElement(formElement);
	calendars[formElement.id] = cal;
}
if (cal.shown) {
	cal.hide();
} else {
	cal.show();
}
}

function display3FieldCalendar(me, de, ye) {
if (!me.id) { me.id = fc_calCount++; }
if (!de.id) { de.id = fc_calCount++; }
if (!ye.id) { ye.id = fc_calCount++; }
var id = me.id + '-' + de.id + '-' + ye.id;
var cal = calendars[id];
if (typeof(cal) == 'undefined') {
	cal = new floobleCalendar();
	cal.setElements(me, de, ye);
	calendars[id] = cal;
}
if (cal.shown) {
	cal.hide();
} else {
	cal.show();
}
}


function floobleCalendar() {
this.setElement = fc_setElement;
this.setElements = fc_setElements;
this.parseDate = fc_parseDate;
this.generateHTML = fc_generateHTML;
this.show = fc_show;
this.hide = fc_hide;
this.moveMonth = fc_moveMonth;
this.setDate = fc_setDate;
this.formatDate = fc_formatDate;
this.setDateFields = fc_setDateFields;
this.parseDateFields = fc_parseDateFields;

this.shown = false;
}

function fc_setElement(formElement) {
this.element = formElement;
this.format = this.element.title;
this.value = this.element.value;
this.id = this.element.id;
this.mode = 1;
}

function fc_setElements(monthElement, dayElement, yearElement) {
this.mElement = monthElement;
this.dElement = dayElement;
this.yElement = yearElement;
this.id = this.mElement.id + '-' + this.dElement.id + '-' + this.yElement.id;
this.element = this.mElement;
if (fc_absoluteOffsetLeft(this.dElement) < fc_absoluteOffsetLeft(this.element)) {
	this.element = this.dElement;
}
if (fc_absoluteOffsetLeft(this.yElement) < fc_absoluteOffsetLeft(this.element)) {
	this.element = this.yElement;
}
if (fc_absoluteOffsetTop(this.mElement) > fc_absoluteOffsetTop(this.element)) {
	this.element = this.mElement;
}
if (fc_absoluteOffsetTop(this.dElement) > fc_absoluteOffsetTop(this.element)) {
	this.element = this.dElement;
}
if (fc_absoluteOffsetTop(this.yElement) > fc_absoluteOffsetTop(this.element)) {
	this.element = this.yElement;
}

this.mode = 2;
}

function fc_parseDate() {
if (this.element.value) {
	this.date = new Date();
	var out = '';
	var token = '';
	var lastCh, ch;
	var start = 0;
	lastCh = this.format.substring(0, 1);
	for (i = 0; i < this.format.length; i++) {
		ch = this.format.substring(i, i+1);
		if (ch == lastCh) { 
			token += ch;
		} else {
			fc_parseToken(this.date, token, this.element.value, start);
			start += token.length;
			token = ch;
		}
		lastCh = ch;
	}
	fc_parseToken(this.date, token, this.element.value, start);
} else {
	this.date = new Date();
}
if ('' + this.date.getMonth() == 'NaN') {
	this.date = new Date();
}
}	

function fc_parseDateFields() {
this.date = new Date();
if (this.mElement.value) this.date.setMonth(fc_getFieldValue(this.mElement) - 1);
if (this.dElement.value) this.date.setDate(fc_getFieldValue(this.dElement));
if (this.yElement.value) this.date.setFullYear(fc_getFieldValue(this.yElement));
if ('' + this.date.getMonth() == 'NaN') {
	this.date = new Date();
}
}

function fc_setDate(d, m, y) {
this.date.setYear(y);
this.date.setMonth(m);
this.date.setDate(d);
if (this.mode == 1) {
	this.element.value = this.formatDate();
} else {
	this.setDateFields();
}
this.hide();
}

function fc_setDateFields() {
fc_setFieldValue(this.mElement, fc_zeroPad(this.date.getMonth() + 1));
fc_setFieldValue(this.dElement, fc_zeroPad(this.date.getDate()));
fc_setFieldValue(this.yElement, this.date.getFullYear());
}

function fc_formatDate() {
var out = '';
var token = '';
var lastCh, ch;
lastCh = this.format.substring(0, 1);
for (i = 0; i < this.format.length; i++) {
	ch = this.format.substring(i, i+1);
	if (ch == lastCh) { 
		token += ch;
	} else {
		out += fc_formatToken(this.date, token);
		token = ch;
	}
	lastCh = ch;
}
out += fc_formatToken(this.date, token);
return out;
}

function fc_show() {
if (typeof(fc_openCal) != 'undefined') { fc_openCal.hide(); }

if (this.mode == 1) {
	this.parseDate();
} else {
	this.parseDateFields();
}
this.showDate = new Date(this.date.getTime());
if (typeof(this.div) != 'undefined') {
	this.div.innerHTML = this.generateHTML();
}

if (typeof(this.div) == 'undefined') {
	this.div = document.createElement('DIV');
	this.div.style.position = 'absolute';
	this.div.style.display = 'none';
	this.div.style.zIndex = '18';
	this.div.className = 'fc_main';
	this.div.innerHTML = this.generateHTML();
	this.div.style.left = fc_absoluteOffsetLeft(this.element) + "px";
	this.div.style.top = fc_absoluteOffsetTop(this.element) + this.element.offsetHeight + 1 + "px";
	document.body.appendChild(this.div);
}
this.div.style.display = 'block';
this.shown = true;
fc_openCal = this;
}

function fc_generateHTML() {
var html = '<TABLE><TR><TD CLASS="fc_head" COLSPAN="6"><DIV STYLE="float: right"></DIV>CALENDARIO:</TD><TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').hide();"><B>X</B></TD></TR>';
html += '<TR><TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').moveMonth(-12);"><B><<</B></TD><TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').moveMonth(-1);"><B><</B></TD><TD COLSPAN="3" CLASS="fc_wk">' + fc_months[this.showDate.getMonth()] + ' ' + fc_getYear(this.showDate) + '</TD><TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').moveMonth(1);"><B>></B></TD><TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').moveMonth(12);"><B>>></B></TD></TR>';
html += '<TR><TD WIDTH="14%" CLASS="fc_wk">Lu</TD><TD WIDTH="14%" CLASS="fc_wk">Ma</TD><TD WIDTH="14%" CLASS="fc_wk">Mi</TD><TD WIDTH="14%" CLASS="fc_wk">Ju</TD><TD WIDTH="14%" CLASS="fc_wk">Vi</TD><TD class="fc_wk" WIDTH="14%">Sa</TD><TD class="fc_wknd" WIDTH="14%">Do</TD></TR>';
html += '<TR>';
var dow = 0;
var i, style;
var totald = fc_monthLength(this.showDate);
for (i = 0; i < fc_firstDOW(this.showDate); i++) {
	dow++;
	html += '<TD> </TD>';
}
for (i = 1; i <= totald; i++) {
	if (dow == 0) { html += '<TR>'; }
	if (this.showDate.getMonth() == this.date.getMonth() && this.showDate.getYear() == this.date.getYear() && this.date.getDate() == i) { 
		style = ' style="font-weight: bold;"';
	} else {
		style = '';
	}
	html += '<TD CLASS="fc_date" onMouseover="this.className = \'fc_dateHover\';" onMouseout="this.className=\'fc_date\';" onClick="getCalendar(\'' + this.id + '\').setDate(' + i + ', ' + this.showDate.getMonth() + ', ' + this.showDate.getFullYear() + ');" ' + style + '>' + i + '</TD>';
	dow++;
	if (dow == 7) {
		html += '</TR>';
		dow = 0;
	}
}
if (dow != 0) {
	for (i = dow; i < 7; i++) {
		html += '<TD> </TD>';
	}
}
html +='</TR>';
html += '</TABLE>';
return html;
}

function fc_hide() {
if (this.div != false) {
	this.div.style.display = 'none';
}
this.shown = false;
fc_openCal = undefined;
}

function fc_moveMonth(amount) {
var m = this.showDate.getMonth();
var y = fc_getYear(this.showDate);
if (amount == 1)  {
	if (m == 11)  {
		this.showDate.setMonth(0);
		this.showDate.setYear(y + 1);
	} else {
		this.showDate.setMonth(m + 1);
	}
} else if (amount == -1)  {
	if (m == 0)  {
		this.showDate.setMonth(11);
		this.showDate.setYear(y - 1);
	} else {
		this.showDate.setMonth(m - 1);
	}
} else if (amount == 12) {
	this.showDate.setYear(y + 1);
} else if (amount == -12) {
	this.showDate.setYear(y - 1);
}
this.div.innerHTML = this.generateHTML();
}


function fc_absoluteOffsetTop(obj) {
var top = obj.offsetTop;
var parent = obj.offsetParent;
while (parent != document.body) {
	top += parent.offsetTop;
	parent = parent.offsetParent;
}
return top;
}

function fc_absoluteOffsetLeft(obj) {
var left = obj.offsetLeft;
var parent = obj.offsetParent;
while (parent != document.body) {
	left += parent.offsetLeft;
	parent = parent.offsetParent;
}
return left;
}

function fc_firstDOW(date) {
var dow = date.getDay();
var day = date.getDate();
if (day % 7 == 0) return dow;
return (7 + dow - (day % 7)) % 7; 
}

function fc_getYear(date) {
var y = date.getYear();
if (y > 1900) return y;
return 1900 + y;
}

function fc_monthLength(date) {
var month = date.getMonth();
var totald = 30;
if (month == 0 
	|| month == 2
	|| month == 4
	|| month == 6
	|| month == 7
	|| month == 9
	|| month == 11) totald = 31;
if (month == 1) {
	var year = date.getYear();
	if (year % 4 == 0 && (year % 400 == 0 || year % 100 != 0))
 		totald = 29;
	else
		totald = 28;
}
return totald;
}

function fc_formatToken(date, token) {
var command = token.substring(0, 1);
if (command == 'y' || command == 'Y') {
	if (token.length == 2) { return fc_zeroPad(date.getFullYear() % 100); }
	if (token.length == 4) { return date.getFullYear(); } 
}
if (command == 'd' || command == 'D') {
	if (token.length == 2) { return fc_zeroPad(date.getDate()); }
}
if (command == 'm' || command == 'M') {
	if (token.length == 2) { return fc_zeroPad(date.getMonth() + 1); }
	if (token.length == 3) { return fc_months[date.getMonth()]; } 
}
return token;
}

function fc_parseToken(date, token, value, start) {
var command = token.substring(0, 1);
var v;
if (command == 'y' || command == 'Y') {
	if (token.length == 2) { 
		v = value.substring(start, start + 2);
		if (v < 70) { date.setFullYear(2000 + parseInt(v)); } else { date.setFullYear(1900 + parseInt(v)); } 
	}
	if (token.length == 4) { v = value.substring(start, start + 4); date.setFullYear(v);} 
}
if (command == 'd' || command == 'D') {
	if (token.length == 2) { v = value.substring(start, start + 2); date.setDate(v); }
}
if (command == 'm' || command == 'M') {
	if (token.length == 2) { v = value.substring(start, start + 2); date.setMonth(v - 1); }
	if (token.length == 3) { 
		v = value.substring(start, start + 3);
		var i;
		for (i = 0; i < fc_months.length; i++) {
			if (fc_months[i].toUpperCase() == v.toUpperCase()) { date.setMonth(i); }
		}
	} 
}
}

function fc_zeroPad(num) {
if (num < 10) { return '0' + num; }
return num;
}

function fc_getObj(id) {
if (fc_ie) { return document.all[id]; } 
else { return document.getElementById(id);	}
}

function fc_setFieldValue(field, value) {
        if (field.type.substring(0,6) == 'select') {
                var i;
                for (i = 0; i < field.options.length; i++) {
                        if (fc_equals(field.options[i].value, value)) {
                                field.selectedIndex = i;
                        }
                }
        } else {
                field.value = value;
        }
}

function fc_getFieldValue(field) {
        if (field.type.substring(0,6) == 'select') {
                return field.options[field.selectedIndex].value;
        } else {
                return field.value;
        }
}

function fc_equals(val1, val2) {
	if (val1 == val2) return true;      		
	if (1 * val1 == 1 * val2) return true;
	return false;
}