// Calendar: a Javascript class for Mootools that adds accessible and unobtrusive date pickers to your form elements <http://electricprism.com/aeron/calendar>
// Calendar RC4, Copyright (c) 2007 Aeron Glemann <http://electricprism.com/aeron>, MIT Style License.
// Mootools 1.2 compatibility by Davorin Šego

var Calendar = new Class({	

	options: {
		blocked: [], // blocked dates 
		classes: [], // ['calendar', 'prev', 'next', 'month', 'year', 'today', 'invalid', 'valid', 'inactive', 'active', 'hover', 'hilite']
		days: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // days of the week starting at sunday
		direction: 0, // -1 past, 0 past + future, 1 future
		draggable: true,
		months: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
		navigation: 1, // 0 = no nav; 1 = single nav for month; 2 = dual nav for month and year
		offset: 0, // first day of the week: 0 = sunday, 1 = monday, etc..
		onHideStart: Class.empty,
		onHideComplete: Class.empty,
		onShowStart: Class.empty,
		onShowComplete: Class.empty,
		pad: 1, // padding between multiple calendars
		tweak: {x: 0, y: 0} // tweak calendar positioning
	},

	// initialize: calendar constructor
	// @param obj (obj) a js object containing the form elements and format strings { id: 'format', id: 'format' etc }
	// @param props (obj) optional properties

	initialize: function(obj, options) {
		// basic error checking
		if (!obj) { return false; }

		this.setOptions(options);

		// create our classes array
		var keys = ['calendar', 'prev', 'next', 'month', 'year', 'today', 'invalid', 'valid', 'inactive', 'active', 'hover', 'hilite'];

		var values = keys.map(function(key, i) {
			if (this.options.classes[i]) {
				if (this.options.classes[i].length) { key = this.options.classes[i]; }
			}
			return key;
		}, this);

		this.classes = values.associate(keys);

		// create cal element with css styles required for proper cal functioning
		this.calendar = new Element('div', { 
			'styles': { left: '-1000px', opacity: 0, position: 'absolute', top: '-1000px', zIndex: 1000 }
		}).addClass(this.classes.calendar).injectInside(document.body);

		// iex 6 needs a transparent iframe underneath the calendar in order to not allow select elements to render through
		if (window.ie6) {
			this.iframe = new Element('iframe', { 
				'styles': { left: '-1000px', position: 'absolute', top: '-1000px', zIndex: 999 }
			}).injectInside(document.body);
			this.iframe.style.filter = 'progid:DXImageTransform.Microsoft.Alpha(style=0,opacity=0)';
		}

		// initialize fade method
		this.fx = new Fx.Tween(this.calendar, {
			onStart: function() { 
				if (this.calendar.getStyle('opacity') == 0) { // show
					if (window.ie6) { this.iframe.setStyle('display', 'block'); }
					this.calendar.setStyle('display', 'block');
					this.fireEvent('onShowStart', this.element);
				}
				else { // hide
					this.fireEvent('onHideStart', this.element);
				}
			}.bind(this),
			onComplete: function() { 
				if (this.calendar.getStyle('opacity') == 0) { // hidden
					this.calendar.setStyle('display', 'none');
					if (window.ie6) { this.iframe.setStyle('display', 'none'); }
					this.fireEvent('onHideComplete', this.element);
				}
				else { // shown
					this.fireEvent('onShowComplete', this.element);
				}
			}.bind(this)
		});

		// initialize drag method
		if (window.Drag && this.options.draggable) {
			this.drag = new Drag.Move(this.calendar, { 
				onDrag: function() {
					if (window.ie6) { this.iframe.setStyles({ left: this.calendar.style.left, top: this.calendar.style.top }); } 
				}.bind(this) 
			}); 
		}
		
		// create calendars array
		this.calendars = [];

		var id = 0;
		var d = new Date(); // today

		d.setDate(d.getDate() + this.options.direction.toInt()); // correct today for directional offset

		for (var i in obj) {
			var cal = { 
				button: new Element('button', { 'type': 'button' }),
				el: $(i),
				els: [],
				id: id++,
				month: d.getMonth(),
				visible: false,
				year: d.getFullYear()
			};

			// fix for bad element (naughty, naughty element!)
			if (!this.element(i, obj[i], cal)) { continue; }
			
			cal.el.addClass(this.classes.calendar);

			// create cal button
			cal.button.addClass(this.classes.calendar).addEvent('click', function(cal) { this.toggle(cal); }.pass(cal, this)).injectAfter(cal.el);

			// read in default value
			cal.val = this.read(cal);

			$extend(cal, this.bounds(cal)); // abs bounds of calendar

			$extend(cal, this.values(cal)); // valid days, months, years

			this.rebuild(cal);

			this.calendars.push(cal); // add to cals array		
		}	
	},


	// blocked: returns an array of blocked days for the month / year
	// @param cal (obj)
	// @returns blocked days (array)

	blocked: function(cal) {
		var blocked = [];
		var offset = new Date(cal.year, cal.month, 1).getDay(); // day of the week (offset)
		var last = new Date(cal.year, cal.month + 1, 0).getDate(); // last day of this month
		
		this.options.blocked.each(function(date){
			var values = date.split(' ');
			
			// preparation
			for (var i = 0; i <= 3; i++){ 
				if (!values[i]){ values[i] = (i == 3) ? '' : '*'; } // make sure blocked date contains values for at least d, m and y
				values[i] = values[i].contains(',') ? values[i].split(',') : new Array(values[i]); // split multiple values
				var count = values[i].length - 1;
				for (var j = count; j >= 0; j--){
					if (values[i][j].contains('-')){ // a range
						var val = values[i][j].split('-');
						for (var k = val[0]; k <= val[1]; k++){
							if (!values[i].contains(k)){ values[i].push(k + ''); }
						}
						values[i].splice(j, 1);
					}
				}
			}

			// execution
			if (values[2].contains(cal.year + '') || values[2].contains('*')){
				if (values[1].contains(cal.month + 1 + '') || values[1].contains('*')){
					values[0].each(function(val){ // if blocked value indicates this month / year
						if (val > 0){ blocked.push(val.toInt()); } // add date to blocked array
					});

					if (values[3]){ // optional value for day of week
						for (var i = 0; i < last; i++){
								var day = (i + offset) % 7;
	
								if (values[3].contains(day + '')){ 
									blocked.push(i + 1); // add every date that corresponds to the blocked day of the week to the blocked array
								}
						}
					}
				}
			}
		}, this);

		return blocked;
	},


	// bounds: returns the start / end bounds of the calendar
	// @param cal (obj)
	// @returns obj	

	bounds: function(cal) {
		// 1. first we assume the calendar has no bounds (or a thousand years in either direction)
		
		// by default the calendar will accept a millennium in either direction
		var start = new Date(1000, 0, 1); // jan 1, 1000
		var end = new Date(2999, 11, 31); // dec 31, 2999

		// 2. but if the cal is one directional we adjust accordingly
		var date = new Date().getDate() + this.options.direction.toInt();

		if (this.options.direction > 0) {
			start = new Date();
			start.setDate(date + this.options.pad * cal.id);
		}
		
		if (this.options.direction < 0) {
			end = new Date();
			end.setDate(date - this.options.pad * (this.calendars.length - cal.id - 1));
		}

		// 3. then we can further filter the limits by using the pre-existing values in the selects
		cal.els.each(function(el) {	
			if (el.get('tag') == 'select') {		
				if (el.format.test('(y|Y)')) { // search for a year select
					var years = [];

					el.getChildren().each(function(option) { // get options
						var values = this.unformat(option.value, el.format);
	
						if (!years.contains(values[0])) { years.push(values[0]); } // add to years array
					}, this);
	
					years.sort(this.sort);
			
					if (years[0] > start.getFullYear()) { 
						d = new Date(years[0], start.getMonth() + 1, 0); // last day of new month
					
						if (start.getDate() > d.getDate()) { start.setDate(d.getDate()); }
	
						start.setYear(years[0]); 
					}
					
					if (years.getLast() < end.getFullYear()) { 
						d = new Date(years.getLast(), end.getMonth() + 1, 0); // last day of new month
					
						if (end.getDate() > d.getDate()) { end.setDate(d.getDate()); }
	
						end.setYear(years.getLast());
					}		
				}
	
				if (el.format.test('(F|m|M|n)')) { // search for a month select
					var months_start = [];
					var months_end = [];

					el.getChildren().each(function(option) { // get options
						var values = this.unformat(option.value, el.format);
	
						if ($type(values[0]) != 'number' || values[0] == years[0]) { // if it's a year / month combo for curr year, or simply a month select
							if (!months_start.contains(values[1])) { months_start.push(values[1]); } // add to months array
						}
	
						if ($type(values[0]) != 'number' || values[0] == years.getLast()) { // if it's a year / month combo for curr year, or simply a month select
							if (!months_end.contains(values[1])) { months_end.push(values[1]); } // add to months array
						}
					}, this);
	
					months_start.sort(this.sort);
					months_end.sort(this.sort);
					
					if (months_start[0] > start.getMonth()) { 
						d = new Date(start.getFullYear(), months_start[0] + 1, 0); // last day of new month
					
						if (start.getDate() > d.getDate()) { start.setDate(d.getDate()); }
	
						start.setMonth(months_start[0]); 
					}
					
					if (months_end.getLast() < end.getMonth()) { 
						d = new Date(start.getFullYear(), months_end.getLast() + 1, 0); // last day of new month
					
						if (end.getDate() > d.getDate()) { end.setDate(d.getDate()); }
	
						end.setMonth(months_end.getLast());
					}		
				}
			}
		}, this);
		
		return { 'start': start, 'end': end };
	},


	// caption: returns the caption element with header and navigation
	// @param cal (obj)
	// @returns caption (element)

	caption: function(cal) {
		// start by assuming navigation is allowed
		var navigation = {
			prev: { 'month': true, 'year': true },
			next: { 'month': true, 'year': true }
		};
		
		// if we're in an out of bounds year
		if (cal.year == cal.start.getFullYear()) { 
			navigation.prev.year = false; 
			if (cal.month == cal.start.getMonth() && this.options.navigation == 1) { 
				navigation.prev.month = false;
			}		
		}		
		if (cal.year == cal.end.getFullYear()) { 
			navigation.next.year = false; 
			if (cal.month == cal.end.getMonth() && this.options.navigation == 1) { 
				navigation.next.month = false;
			}
		}

		// special case of improved navigation but months array with only 1 month we can disable all month navigation
		if ($type(cal.months) == 'array') {
			if (cal.months.length == 1 && this.options.navigation == 2) {
				navigation.prev.month = navigation.next.month = false;
			}
		}

		var caption = new Element('caption');

		var prev = new Element('a').addClass(this.classes.prev).appendText('\x3c'); // <		
		var next = new Element('a').addClass(this.classes.next).appendText('\x3e'); // >

		if (this.options.navigation == 2) {
			var month = new Element('span').addClass(this.classes.month).injectInside(caption);
			
			if (navigation.prev.month) { prev.clone().addEvent('click', function(cal) { this.navigate(cal, 'm', -1); }.pass(cal, this)).injectInside(month); }
			
			month.adopt(new Element('span').appendText(this.options.months[cal.month]));

			if (navigation.next.month) { next.clone().addEvent('click', function(cal) { this.navigate(cal, 'm', 1); }.pass(cal, this)).injectInside(month); }

			var year = new Element('span').addClass(this.classes.year).injectInside(caption);

			if (navigation.prev.year) { prev.clone().addEvent('click', function(cal) { this.navigate(cal, 'y', -1); }.pass(cal, this)).injectInside(year); }
			
			year.adopt(new Element('span').appendText(cal.year));

			if (navigation.next.year) { next.clone().addEvent('click', function(cal) { this.navigate(cal, 'y', 1); }.pass(cal, this)).injectInside(year); }
		}
		else { // 1 or 0
			if (navigation.prev.month && this.options.navigation) { prev.clone().addEvent('click', function(cal) { this.navigate(cal, 'm', -1); }.pass(cal, this)).injectInside(caption); }

			caption.adopt(new Element('span').addClass(this.classes.month).appendText(this.options.months[cal.month]));
			
			caption.adopt(new Element('span').addClass(this.classes.year).appendText(cal.year));
			
			if (navigation.next.month && this.options.navigation) { next.clone().addEvent('click', function(cal) { this.navigate(cal, 'm', 1); }.pass(cal, this)).injectInside(caption); }

		}

		return caption;
	},


	// changed: run when a select value is changed
	// @param cal (obj)

	changed: function(cal) {
		cal.val = this.read(cal); // update calendar val from inputs	

		$extend(cal, this.values(cal)); // update bounds - based on curr month

		this.rebuild(cal); // rebuild days select

		if (!cal.val) { return; } // in case the same date was clicked the cal has no set date we should exit		

		if (cal.val.getDate() < cal.days[0]) { cal.val.setDate(cal.days[0]); }
		if (cal.val.getDate() > cal.days.getLast()) { cal.val.setDate(cal.days.getLast()); }
		
		cal.els.each(function(el) {	// then we can set the value to the field
			el.value = this.format(cal.val, el.format); 		
		}, this);
		
		this.check(cal); // checks other cals

		this.calendars.each(function(kal) { // update cal graphic if visible
			if (kal.visible) { this.display(kal); }
		}, this);
	},


	// check: checks other calendars to make sure no overlapping values
	// @param cal (obj)

	check: function(cal) {
		this.calendars.each(function(kal, i) {
			if (kal.val) { // if calendar has value set
				var change = false;
			
				if (i < cal.id) { // preceding calendar
					var bound = new Date(Date.parse(cal.val));
					
					bound.setDate(bound.getDate() - (this.options.pad * (cal.id - i)));

					if (bound < kal.val) { change = true; }
				}
				if (i > cal.id) { // following calendar
					var bound = new Date(Date.parse(cal.val));
					
					bound.setDate(bound.getDate() + (this.options.pad * (i - cal.id)));
					
					if (bound > kal.val) { change = true; }
				}

				if (change) {
					if (kal.start > bound) { bound = kal.start; }
					if (kal.end < bound) { bound = kal.end; }

					kal.month = bound.getMonth();
					kal.year = bound.getFullYear();		

					$extend(kal, this.values(kal));			

					// TODO - IN THE CASE OF SELECT MOVE TO NEAREST VALID VALUE
					// IN THE CASE OF INPUT DISABLE

					// if new date is not valid better unset cal value
					// otherwise it would mean incrementally checking to find the nearest valid date which could be months / years away
					kal.val = kal.days.contains(bound.getDate()) ? bound : null;

					this.write(kal);

					if (kal.visible) { this.display(kal); } // update cal graphic if visible
				}
			}
			else {
				kal.month = cal.month;
				kal.year = cal.year;
			}
		}, this);
	},
	

	// clicked: run when a valid day is clicked in the calendar
	// @param cal (obj)

	clicked: function(td, day, cal) {
		cal.val = (this.value(cal) == day) ? null : new Date(cal.year, cal.month, day); // set new value - if same then disable

		this.write(cal); 

		// ok - in the special case that it's all selects and there's always a date no matter what (at least as far as the form is concerned)
		// we can't let the calendar undo a date selection - it's just not possible!!
		if (!cal.val) { cal.val = this.read(cal); }

		if (cal.val) {
			this.check(cal); // checks other cals						
			this.toggle(cal); // hide cal
		} 
		else { // remove active class and replace with valid
			td.addClass(this.classes.valid);
			td.removeClass(this.classes.active);
		}
	},
	

	// display: create calendar element
	// @param cal (obj)

	display: function(cal) {
		// 1. header and navigation
		this.calendar.empty(); // init div

		this.calendar.className = this.classes.calendar + ' ' + this.options.months[cal.month].toLowerCase();

		var div = new Element('div').injectInside(this.calendar); // a wrapper div to help correct browser css problems with the caption element

		var table = new Element('table').injectInside(div).adopt(this.caption(cal));
				
		// 2. day names		
		var thead = new Element('thead').injectInside(table);

		var tr = new Element('tr').injectInside(thead);
		
		for (var i = 0; i <= 6; i++) {
			var th = this.options.days[(i + this.options.offset) % 7];
			
			tr.adopt(new Element('th', { 'title': th }).appendText(th.substr(0, 1)));
		}

		// 3. day numbers
		var tbody = new Element('tbody').injectInside(table);
		var tr = new Element('tr').injectInside(tbody);

		var d = new Date(cal.year, cal.month, 1);
		var offset = ((d.getDay() - this.options.offset) + 7) % 7; // day of the week (offset)
		var last = new Date(cal.year, cal.month + 1, 0).getDate(); // last day of this month
		var prev = new Date(cal.year, cal.month, 0).getDate(); // last day of previous month
		var active = this.value(cal); // active date (if set and within curr month)
		var valid = cal.days; // valid days for curr month
		var inactive = []; // active dates set by other calendars
		var hilited = [];
		this.calendars.each(function(kal, i) {
			if (kal != cal && kal.val) {
				if (cal.year == kal.val.getFullYear() && cal.month == kal.val.getMonth()) { inactive.push(kal.val.getDate()); }

				if (cal.val) {
					for (var day = 1; day <= last; day++) {
						d.setDate(day);
						
						if ((i < cal.id && d > kal.val && d < cal.val) || (i > cal.id && d > cal.val && d < kal.val)) { 
							if (!hilited.contains(day)) { hilited.push(day); }
						}
					}
				}
			}
		}, this);
		var d = new Date();
		var today = new Date(d.getFullYear(), d.getMonth(), d.getDate()).getTime(); // today obv 
		
		for (var i = 1; i < 43; i++) { // 1 to 42 (6 x 7 or 6 weeks)
			if ((i - 1) % 7 == 0) { tr = new Element('tr').injectInside(tbody); } // each week is it's own table row

			var td = new Element('td').injectInside(tr);
						
			var day = i - offset;
			var date = new Date(cal.year, cal.month, day);
			
			var cls = '';
			
			if (day === active) { cls = this.classes.active; } // active
			else if (inactive.contains(day)) { cls = this.classes.inactive; } // inactive
			else if (valid.contains(day)) { cls = this.classes.valid; } // valid
			else if (day >= 1 && day <= last) { cls = this.classes.invalid; } // invalid

			if (date.getTime() == today) { cls = cls + ' ' + this.classes.today; } // adds class for today

			if (hilited.contains(day)) { cls = cls + ' ' + this.classes.hilite; } // adds class if hilited

			td.addClass(cls);

			if (valid.contains(day)) { // if it's a valid - clickable - day we add interaction
				td.setProperty('title', this.format(date, 'D M jS Y'));
				
				td.addEvents({
					'click': function(td, day, cal) { 
						this.clicked(td, day, cal); 
					}.pass([td, day, cal], this),
					'mouseover': function(td, cls) { 
						td.addClass(cls); 
					}.pass([td, this.classes.hover]),
					'mouseout': function(td, cls) { 
						td.removeClass(cls); 
					}.pass([td, this.classes.hover])
				});
			}

			// pad calendar with last days of prev month and first days of next month
			if (day < 1) { day = prev + day; }
			else if (day > last) { day = day - last; }

			td.appendText(day);
		}
	},


	// element: helper function
	// @param el (string) element id
	// @param f (string) format string
	// @param cal (obj)

	element: function(el, f, cal) {
		if ($type(f) == 'object') { // in the case of multiple inputs per calendar
			for (var i in f) { 
				if (!this.element(i, f[i], cal)) { return false; }		
			}
			
			return true;
		}

		el = $(el);

		if (!el) { return false; }
		
		el.format = f;
		
		if (el.get('tag') == 'select') { // select elements allow the user to manually set the date via select option
			el.addEvent('change', function(cal) { this.changed(cal); }.pass(cal, this));
		}
		else { // input (type text) elements restrict the user to only setting the date via the calendar
			el.readOnly = true;
			el.addEvent('focus', function(cal) { this.toggle(cal); }.pass(cal, this));
		}

		cal.els.push(el);

		return true;
	},


	// format: formats a date object according to passed in instructions
	// @param date (obj)
	// @param f (string) any combination of punctuation / separators and d, j, D, l, S, m, n, F, M, y, Y
	// @returns string

	format: function(date, format) {
		var str = '';
		
		if (date) {
			var j = date.getDate(); // 1 - 31
      var w = date.getDay(); // 0 - 6
			var l = this.options.days[w]; // Sunday - Saturday
			var n = date.getMonth() + 1; // 1 - 12
			var f = this.options.months[n - 1]; // January - December
			var y = date.getFullYear() + ''; // 19xx - 20xx
			
			for (var i = 0, len = format.length; i < len; i++) {
				var cha = format.charAt(i); // format char
				
				switch(cha) {
					// year cases
					case 'y': // xx - xx
						y = y.substr(2);
					case 'Y': // 19xx - 20xx
						str += y;
						break;
	
					// month cases
					case 'm': // 01 - 12
						if (n < 10) { n = '0' + n; }
					case 'n': // 1 - 12
						str += n;
						break;
	
					case 'M': // Jan - Dec
						f = f.substr(0, 3);
					case 'F': // January - December
						str += f;
						break;
	
					// day cases
					case 'd': // 01 - 31
						if (j < 10) { j = '0' + j; }
					case 'j': // 1 - 31
						str += j;
						break;
	
					case 'D': // Sun - Sat
						l = l.substr(0, 3);
					case 'l': // Sunday - Saturday
						str += l;
						break;
	
					case 'N': // 1 - 7
						w += 1;
					case 'w': // 0 - 6
						str += w;
						break;

					case 'S': // st, nd, rd or th (works well with j)
						if (j % 10 == 1 && j != '11') { str += 'st'; }
						else if (j % 10 == 2 && j != '12') { str += 'nd'; }
						else if (j % 10 == 3 && j != '13') { str += 'rd'; }
						else { str += 'th'; }
						break;
	
					default:
						str += cha;
				}
			}
		}

	  return str; //  return format with values replaced
	},


	// navigate: calendar navigation
	// @param cal (obj)
	// @param type (str) m or y for month or year
	// @param n (int) + or - for next or prev

	navigate: function(cal, type, n) {
		switch (type) {
			case 'm': // month
					if ($type(cal.months) == 'array') {
						var i = cal.months.indexOf(cal.month) + n; // index of current month
						
						if (i < 0 || i == cal.months.length) { // out of range
							if (this.options.navigation == 1) { // if type 1 nav we'll need to increment the year
								this.navigate(cal, 'y', n);		
							}
		
							i = (i < 0) ? cal.months.length - 1 : 0;
						}

						cal.month = cal.months[i];
					}
					else { 
						var i = cal.month + n;
		
						if (i < 0 || i == 12) {
							if (this.options.navigation == 1) {
								this.navigate(cal, 'y', n);	
							}
		
							i = (i < 0) ? 11 : 0;
						}
						
						cal.month = i;
					}		
					break;

				case 'y': // year
					if ($type(cal.years) == 'array') {
						var i = cal.years.indexOf(cal.year) + n;

						cal.year = cal.years[i]; 
					}
					else { 
						cal.year += n;
					}						
					break;		
		}

		$extend(cal, this.values(cal));

		if ($type(cal.months) == 'array') { // if the calendar has a months select
			var i = cal.months.indexOf(cal.month); // and make sure the curr months exists for the new year

			if (i < 0) { cal.month = cal.months[0]; } // otherwise we'll reset the month
		}


		this.display(cal);
	},


	// read: compiles cal value based on array of inputs passed in
	// @param cal (obj)
	// @returns date (obj) or (null)

	read: function(cal) {
		var arr = [null, null, null];

		cal.els.each(function(el) {
			// returns an array which may contain empty values
			var values = this.unformat(el.value, el.format);
			
			values.each(function(val, i) { 
				if ($type(val) == 'number') { arr[i] = val; }
			}); 
		}, this);

		// we can update the cals month and year values
		if ($type(arr[0]) == 'number') { cal.year = arr[0]; }
		if ($type(arr[1]) == 'number') { cal.month = arr[1]; }

		var val = null;

		if (arr.every(function(i) { return $type(i) == 'number'; })) { // if valid date
			var last = new Date(arr[0], arr[1] + 1, 0).getDate(); // last day of month

			if (arr[2] > last) { arr[2] = last; } // make sure we stay within the month (ex in case default day of select is 31 and month is feb)
			
			val = new Date(arr[0], arr[1], arr[2]);
		}

		return (cal.val == val) ? null : val; // if new date matches old return null (same date clicked twice = disable)
	},

	
	// rebuild: rebuilds days + months selects
	// @param cal (obj)

	rebuild: function(cal) {
		cal.els.each(function(el) {			
			/*
			if (el.get('tag') == 'select' && el.format.test('^(F|m|M|n)$')) { // special case for months-only select
				if (!cal.options) { cal.options = el.clone(); } // clone a copy of months select
			
				var val = (cal.val) ? cal.val.getMonth() : el.value.toInt();

				el.empty(); // initialize select

				cal.months.each(function(month) {
					// create an option element
					var option = new Element('option', {
						'selected': (val == month),
						'value': this.format(new Date(1, month, 1), el.format);
					}).appendText(day).injectInside(el);
				}, this);
			}
			*/

			if (el.get('tag') == 'select' && el.format.test('^(d|j)$')) { // special case for days-only select
				var d = this.value(cal);

				if (!d) { d = el.value.toInt(); } // if the calendar doesn't have a set value, try to use value from select

				el.empty(); // initialize select

				cal.days.each(function(day) {
					// create an option element
					var option = new Element('option', {
						'selected': (d == day),
						'value': ((el.format == 'd' && day < 10) ? '0' + day : day)
					}).appendText(day).injectInside(el);
				}, this);
			}
		}, this); 
	},


	// sort: helper function for numerical sorting

	sort: function(a, b) {
		return a - b;
	},


	// toggle: show / hide calendar 
	// @param cal (obj)

	toggle: function(cal) {
		document.removeEvent('mousedown', this.fn); // always remove the current mousedown script first
			
		if (cal.visible) { // simply hide curr cal						
			cal.visible = false;
			cal.button.removeClass(this.classes.active); // active
			
			this.fx.start('opacity', 1, 0);
		}
		else { // otherwise show (may have to hide others)
			// hide cal on out-of-bounds click
			this.fn = function(e, cal) { 
				var e = new Event(e);
			
				var el = e.target;

				var stop = false;
				
				while (el != document.body && el.nodeType == 1) {
					if (el == this.calendar) { stop = true; }
					this.calendars.each(function(kal) {
						if (kal.button == el || kal.els.contains(el)) { stop = true; }
					});

					if (stop) { 
						e.stop();
						return false;
					}
					else { el = el.parentNode; }
				}
				
				this.toggle(cal);
			}.create({ 'arguments': cal, 'bind': this, 'event': true });				

			document.addEvent('mousedown', this.fn);

			this.calendars.each(function(kal) {
				if (kal == cal) {
					kal.visible = true;
					kal.button.addClass(this.classes.active); // css c-icon-active
				}
				else {
					kal.visible = false;
					kal.button.removeClass(this.classes.active); // css c-icon-active
				}
			}, this);
			
			var size = window.getScrollSize();
			
			var coord = cal.button.getCoordinates();

			var x = coord.right + this.options.tweak.x;
			var y = coord.top + this.options.tweak.y;

			// make sure the calendar doesn't open off screen
			if (!this.calendar.coord) { this.calendar.coord = this.calendar.getCoordinates(); }

			if (x + this.calendar.coord.width > size.x) { x -= (x + this.calendar.coord.width - size.x); }
			if (y + this.calendar.coord.height > size.y) { y -= (y + this.calendar.coord.height - size.y); }
			
			this.calendar.setStyles({ left: x + 'px', top: y + 'px' });

			if (window.ie6) { 
				this.iframe.setStyles({ height: this.calendar.coord.height + 'px', left: x + 'px', top: y + 'px', width: this.calendar.coord.width + 'px' }); 
			}

			this.display(cal);
			
			this.fx.start('opacity', 0, 1);
		}
	},


	// unformat: takes a value from an input and parses the d, m and y elements
	// @param val (string)
	// @param f (string) any combination of punctuation / separators and d, j, D, l, S, m, n, F, M, y, Y
	// @returns array
	
	unformat: function(val, f) {
		f = f.escapeRegExp();
		
		var re = {
			d: '([0-9]{2})',
			j: '([0-9]{1,2})',
			D: '(' + this.options.days.map(function(day) { return day.substr(0, 3); }).join('|') + ')',					
			l: '(' + this.options.days.join('|') + ')',
			S: '(st|nd|rd|th)',
			F: '(' + this.options.months.join('|') + ')',
			m: '([0-9]{2})',
			M: '(' + this.options.months.map(function(month) { return month.substr(0, 3); }).join('|') + ')',					
			n: '([0-9]{1,2})',
			Y: '([0-9]{4})',
			y: '([0-9]{2})'
		}

		var arr = []; // array of indexes

		var g = '';

		// convert our format string to regexp
		for (var i = 0; i < f.length; i++) {
			var c = f.charAt(i);
			
			if (re[c]) {
				arr.push(c);

				g += re[c];
			}
			else {
				g += c;
			}
		}

		// match against date
		var matches = val.match('^' + g + '$');
		
		var dates = new Array(3);

		if (matches) {
			matches = matches.slice(1); // remove first match which is the date

			arr.each(function(c, i) {
				i = matches[i];
				
				switch(c) {
					// year cases
					case 'y':
						i = '19' + i; // 2 digit year assumes 19th century (same as JS)
					case 'Y':
						dates[0] = i.toInt();
						break;

					// month cases
					case 'F':
						i = i.substr(0, 3);
					case 'M':
						i = this.options.months.map(function(month) { return month.substr(0, 3); }).indexOf(i) + 1;
					case 'm':
					case 'n':
						dates[1] = i.toInt() - 1;
						break;

					// day cases
					case 'd':
					case 'j':
						dates[2] = i.toInt();
						break;
				}
			}, this);
		}

		return dates;
	},


	// value: returns day value of calendar if set
	// @param cal (obj)
	// @returns day (int) or null

	value: function(cal) {
		var day = null;

		if (cal.val) {
			if (cal.year == cal.val.getFullYear() && cal.month == cal.val.getMonth()) { day = cal.val.getDate(); }
		}

		return day;
	},
	

	// values: returns the years, months (for curr year) and days (for curr month and year) for the calendar
	// @param cal (obj)
	// @returns obj	

	values: function(cal) {
		var years, months, days;

		cal.els.each(function(el) {	
			if (el.get('tag') == 'select') {		
				if (el.format.test('(y|Y)')) { // search for a year select
					years = [];

					el.getChildren().each(function(option) { // get options
						var values = this.unformat(option.value, el.format);
	
						if (!years.contains(values[0])) { years.push(values[0]); } // add to years array
					}, this);
	
					years.sort(this.sort);
				}
	
				if (el.format.test('(F|m|M|n)')) { // search for a month select
					months = []; // 0 - 11 should be

					el.getChildren().each(function(option) { // get options
						var values = this.unformat(option.value, el.format);
	
						if ($type(values[0]) != 'number' || values[0] == cal.year) { // if it's a year / month combo for curr year, or simply a month select
							if (!months.contains(values[1])) { months.push(values[1]); } // add to months array
						}
					}, this);
	
					months.sort(this.sort);
				}
				
				if (el.format.test('(d|j)') && !el.format.test('^(d|j)$')) { // search for a day select, but NOT a days only select
					days = []; // 1 - 31
					
					el.getChildren().each(function(option) { // get options
						var values = this.unformat(option.value, el.format);

						// in the special case of days we dont want the value if its a days only select
						// otherwise that will screw up the options rebuilding
						// we will take the values if they are exact dates though
						if (values[0] == cal.year && values[1] == cal.month) {
							if (!days.contains(values[2])) { days.push(values[2]); } // add to days array
						}
					}, this);
				}
			}
		}, this);
		
		// we start with what would be the first and last days were there no restrictions
		var first = 1;
		var last = new Date(cal.year, cal.month + 1, 0).getDate(); // last day of the month
		
		// if we're in an out of bounds year
		if (cal.year == cal.start.getFullYear()) {
			// in the special case of improved navigation but no months array, we'll need to construct one
			if (months == null && this.options.navigation == 2) {
				months = [];
				
				for (var i = 0; i < 12; i ++) { 
					if (i >= cal.start.getMonth()) { months.push(i); } 
				}
			}
			
			// if we're in an out of bounds month
			if (cal.month == cal.start.getMonth()) { 
				first = cal.start.getDate(); // first day equals day of bound
			}
		}		
		if (cal.year == cal.end.getFullYear()) {
			// in the special case of improved navigation but no months array, we'll need to construct one
			if (months == null && this.options.navigation == 2) {
				months = [];
				
				for (var i = 0; i < 12; i ++) { 
					if (i <= cal.end.getMonth()) { months.push(i); } 
				}
			}

			if (cal.month == cal.end.getMonth()) { 
				last = cal.end.getDate(); // last day equals day of bound
			}
		}

		// let's get our invalid days
		var blocked = this.blocked(cal);

		// finally we can prepare all the valid days in a neat little array
		if ($type(days) == 'array') { // somewhere there was a days select
			days = days.filter(function(day) {
				if (day >= first && day <= last && !blocked.contains(day)) { return day; }
			});
		}
		else { // no days select we'll need to construct a valid days array
			days = [];
			
			for (var i = first; i <= last; i++) { 
				if (!blocked.contains(i)) { days.push(i); }
			}
		}		

		days.sort(this.sort); // sorting our days will give us first and last of month

		return { 'days': days, 'months': months, 'years': years };
	},


	// write: sets calendars value to form elements
	// @param cal (obj)

	write: function(cal) {
		this.rebuild(cal);	 // in the case of options, we'll need to make sure we have the correct number of days available
		
		cal.els.each(function(el) {	// then we can set the value to the field
			el.value = this.format(cal.val, el.format); 		
		}, this);
	}
});

Calendar.implement(new Events, new Options);



/**
 * @project MavSelectBox (Customizable Select boxes)
 * @author Dustin Hansen
 * @version 0.5.1
 * @url http://fuzecore.com, http://maveno.us
 * @license MIT Style License
 * 
 * @contributions
 * : Container additions for using selectbox in animations and bug fixes
 * : fixed multiselect bug, yayyy! ^_^
 * : Quentin Ambard - http://www.quentin.avricot.com
 */

var MavSelectBox = new Class({
	Implements: [Options, Events],

	options: {
		allowSplit: true,							// depricate for .filter()
		altClass: 'select-box-alt',
		alternate: false,
		alternateOdd: false,
		attachResize: true,
		container: null,
		disableClass: 'disabled',
		elem: null,
		filter: null,
		fxOptions: {},
		groupClass: 'select-box-options-group',
		maxShow: null,
		minShow: 3,
		optionClass: 'select-box-opt',
		selectboxClass: 'select-box',
		selectClass: 'selected',
		selectmenuClass: 'select-box-options',
		separator: '--',							// depricate for .filter()
		showStyles: false,
		size: 1,
		template: '<span>%s</span>',
		tmplt_regex: null,
		useFx: true,

		onHide: $empty(),
		onOver: $empty(),
		onSelect: $empty(),
		onShow: $empty()
	},

	container: null,
	element: null,
	focused: null,
	length: 0,
	selected: null,
	selectedIndex: 0,
	showing: false,
	textSearch: '',
	version: '0.5.1',

	initialize: function(_options) {
		var opts = ($type(_options) != 'object' ? {'elem':_options} : _options);
		if (!$defined(opts.elem)) return;

		this.setOptions(opts);

		if (this.options.filter) {
			this.filter = this.options.filter;
		}

		this.element = $(this.options.elem);
		this.elementCopy = this.element.clone().set({
			'id':this.element.get('id'),
			'name':this.element.get('name')
		});

		if (!$defined(this.options.container) || (this.container = $(this.options.container)) == null) {
			this.container = null;
		}

		this.optClass = 'li[class*=' + this.options.optionClass + ']';

		this.create_select();
		if (this.options.attachResize) { window.addEvent('resize', function() { if (this.showing) { this.show(); } }.bind(this)); }
	},

	destroy: function(_revert) {
		if (_revert) {
			if (this.selected && $defined(this.selected.retrieve('value'))) {
				$each(this.elementCopy.options, function(_elem) {
					if (_elem.value == this.selected.retrieve('value')) { _elem.selected = true; }
				}, this);
			}

			this.elementCopy.replaces($(this.element.get('id')));
		}

		this.remove_events();
		this.elementSelect.destroy();
	},

	create_select: function() {
		var wh = this.element.getSize();
		this.eid = this.element.get('id');

		// create the select element
		this.elementSelect  = new Element('div', {
			'class': this.options.selectboxClass, 
			'styles': { 'width': wh.x, 'height': wh.y }
		}).inject(this.element, 'after');

		// create display element for selectbox
		this.elementDisplay = new Element('a', {'href':'javascript:void(0)'}).inject(this.elementSelect, 'top');
		if (this.elementCopy.get('tabindex') != 0) {
			this.elementDisplay.set('tabindex', this.elementCopy.get('tabindex'));
		}

		this.elementDisplay.setStyles({'height': (wh.y-5), 'line-height': (wh.y-5)});
		this.add_events();

		// create the options element
		this.elementOptions = new Element('ul', {
			'styles': { 'width': wh.x },
			'opacity': (this.options.useFx ? 0 : 1),
			'class': this.options.selectmenuClass
		}).inject(this.elementSelect);

		// create the fx object if useFx is set
		this.fx = this.options.useFx ? new Fx.Tween(this.elementOptions, $merge({
			'duration': '200', 
			'link': 'cancel'
		}, this.options.fxOptions)) : null;

		// loop thru existing options and recreate
		$each(this.element.getChildren(), this.create_option.bind(this));

		// set alternating
		if (this.options.alternate) {
			this.elementOptions.getElements(this.optClass + ':' + (this.options.alternateOdd ? 'odd': 'even')).addClass(this.options.altClass);
		}

		// set default selected option and dislpay value
		(this.selected = this.elementOptions.getElement('li.' + this.options.selectClass)).removeClass(this.options.selectClass);
		this.selectedIndex = this.selected.retrieve('idx');

		this.elementDisplay.set({
			'html': this.selected.get('html'),
			'class': (this.options.showStyles ? this.selected.get('class') : ''),
			'style': (this.options.showStyles ? this.selected.get('style') : '')
		});

		// store option menu coords info
		this.elementOptions.store('coords', this.elementOptions.getCoordinates()).setStyles({'visibility':'','display':'none'});

		// replace select element with hidden input by same id/name
		this.element = new Element('input', {
			'type': 'hidden',
			'value': this.element.get('value'),
			'id': this.element.get('id'),
			'name': this.element.get('name')
		}).replaces(this.element).set('id', this.eid);
	},

	create_option: function(_opt, _idx, _group) {
		// get option information
		var val = _opt.get('value'), selected = !!(_opt.selected);
		var text = (_opt.get('label') ? _opt.get('label') : (_opt.get('text') || '&nbsp;'));

		// determine class for option
		var opt_class = (_opt.get('tag')=='optgroup'?' optgroup unselectable':' ' + this.options.optionClass) + (selected&&!_opt.disabled?' '+this.options.selectClass:'') +
						(_opt.disabled?' '+this.options.disableClass:'');

		// create li replacement for select option
		var new_option = new Element('li', {
			'id': this.eid + '_opt' + _idx,
			'html': this.filter(text, this.options.tmplt_regex, this.options.template),
			'style': _opt.get('style'),
			'class': _opt.get('class') + opt_class
		}).store('value', _opt.get('value'))
		  .store('idx', (_opt.get('tag')!='optgroup'?(++this.length):''))
		  .addEvents({
			'mouseover': this.over.bind(this),
			'mousedown': this.select.bind(this)
		}).inject(($(_group) || this.elementOptions));

		new_option.store('coords', new_option.getCoordinates());
		
		if (_opt.get('tag') == 'optgroup') {
			var optgroup = new Element('ul', {'class': this.options.groupClass}).inject(new_option);
			$each(_opt.getChildren(), function(_sopt, _sidx) {
				this.create_option(_sopt, (_idx + '' + _sidx), optgroup);
			}, this);
		}

		// THIS TO BE REPLACED WITH this.filter()
		// if option.text matches this.options.separator split and go left / right with text
		if (this.options.allowSplit && text.match(new RegExp(this.options.separator))) {
			text = text.split(this.options.separator);
			this.elementOptions.lastChild.set('html', '<span><span class="goleft">' + text[0].trim() + '</span><span class="goright">' + text[1].trim() + '</span><br style="clear:both" /></span>');
		}
	},
	
	filter: function(_str, _regx, _tmplt) {
		return _tmplt.replace(/\%s/i, _str);
	},

	inject: function(_option, _where) {
		
	},
	
	dispose: function(_elem) {
		
	},
	
	add_events: function() {
		this.elementDisplay.addEvents({
			'click': this.show.bind(this),
			'keydown': this.key_option.bind(this),
			'blur': this.hide.bind(this)
		});
	},
	
	remove_events: function() {
		this.elementDisplay.removeEvents({
			'click': this.show.bind(this),
			'keydown': this.key_option.bind(this),

			'blur': this.hide.bind(this)
		});
	},

	key_option: function(e) {
		e = new Event(e);
		if (e.key != 'tab') {
			e.stop();
			switch(e.key) {
				case 'esc':
					this.hide();
					break;

				case 'enter':
					this.select(this.selected);
				case 'tab':
					this.hide();
					break;
				
				case 'up': case 'down':
					if (e.alt) { this.show(); }
					this.select(e.key);
					break;
				
				case 'shift': case 'control': case 'alt':
					break;

				default:
					this.search(e.key);
			}
		}
	},

	search: function(_key, _retrying) {
		this.textSearch += _key;
		var option_elems = this.get_options(), str_found=false, elem = false;
		// var option_elems = this.get_options('li[text^=' + this.textSearch +']'), str_found=false, elem = false;

		for(var i=0; i<option_elems.length; i++) {
			var elem = option_elems[i]
			if ((elem.get('text')).match(new RegExp('^' + this.textSearch, 'i'))) {
				if (this.selected != elem) { this.select(elem); }
				str_found = true;
				break;
			}
		}

		if (str_found === false) {
			this.textSearch = '';
			if (!_retrying) { this.search(_key, true); }
		}
	},

	get_options: function(_selector) {
		return this.elementOptions.getElements((_selector || this.optClass));
	},

	// is there a better way to do this?
	determine: function(_elem) {
		var elem = ($type(_elem) == 'element' ? (_elem.get('tag') != 'li' ? _elem.getParent('li') : _elem) : this.get_options());

		if ($type(_elem) != 'element') {
			var fromIdx = ((this.focused && this.focused != this.selected) ? this.focused : this.selected).retrieve('idx');

			elem = elem.filter(function(_el) {
						return (!$(_el).hasClass(this.options.disableClass) && 
								((_elem == 'up' && $(_el).retrieve('idx') < fromIdx ) ||
								 (_elem == 'down' && $(_el).retrieve('idx') > fromIdx)));
			}, this);

			elem = elem[0] ? (_elem == 'up' ? elem.reverse() : elem)[0] : elem;
		}

		return elem;
	},

	over: function(e) {
		e = new Event(e);
		var elem = ($(e.target).get('tag') != 'li' ? $(e.target).getParent('li') : $(e.target));

		if (!elem.hasClass(this.options.disableClass) && !elem.hasClass('unselectable')) {
			if ($type(this.focused) == 'element') { this.focused.removeClass(this.options.selectClass); }
			(this.focused = elem).addClass(this.options.selectClass);
			this.fireEvent('over');
		}
	},

	select: function(_elem) {
		var elem = ($type(_elem) == 'event' ? new Event(_elem).target : _elem);
		elem = this.determine(elem);
		
		if (elem && !elem.hasClass(this.options.disableClass) && !elem.hasClass('unselectable')) {
			if (this.focused) { this.focused.removeClass(this.options.selectClass); }
			if (this.showing === true) {
				(this.focused = this.selected = elem).addClass(this.options.selectClass);
				this.scroll();
			} else {
				this.selected = elem;
			}

			this.element.set('value', this.selected.retrieve('value'));
			this.selectedIndex = this.selected.retrieve('idx');

			this.elementDisplay.set({
				'html': this.selected.get('html'),
				'class': (this.options.showStyles ? this.selected.get('class') : ''),
				'style': (this.options.showStyles ? this.selected.get('style') : '')
			}).removeClass(this.options.selectClass).removeClass(this.options.altClass);

			this.fireEvent('select', this.selected);
		}
	},

	scroll: function() {
		var sElem = this.elementOptions.getCoordinates();
		var selElem = this.selected.getCoordinates();
		var elScrollTop = this.elementOptions.scrollTop;

		if ((elScrollTop + sElem.height) < (selElem.top - sElem.top + 5)) {
			this.elementOptions.scrollTop = (selElem.top - sElem.top - sElem.height + selElem.height);
		}
		else if ((selElem.top - sElem.top + selElem.height) < (elScrollTop + 5)) {
			this.elementOptions.scrollTop = (selElem.top - sElem.top);
		}
	},

	show: function() {
		var coords = this.elementOptions.retrieve('coords');
		var sElem = this.elementSelect.getCoordinates(), sElem_top = (sElem.y + sElem.height);

		if (this.container) {
			sElem_top -= this.container.getStyle('top');
			sElem.left -= this.container.getStyle('left');
		}

		var h = ((window.getSize().y + window.getScroll().y) - sElem_top);
		var height = (coords.height >= h ? 0 : 'auto'), showing = 0;

		if (coords.height >= h) {
			$each(this.get_options(), function(_elem) {
				var eH = _elem.retrieve('coords').height;
				if (height < h && (height + eH) < h) { height += eH; showing++; }
			}, this);

			if (showing < this.options.minShow) {
				height = (sElem.top < coords.height ? sElem.top - 10 : coords.height);
				sElem_top = sElem.top - height - 1;
			}
		}

		this.elementOptions.setStyles({
			'display': '', 
			'height': height, 
			'top': sElem_top, 
			'left': sElem.x,
			'margin': 0
		});
		this.scroll();

		this.showing = true;
		this.focused = this.selected;
		this.focused.addClass(this.options.selectClass);
		this.fireEvent('show');

		if (this.options.useFx) { this.fx.start('opacity', 0, 1); }
		
		// fixes chrome/safari focus bug
		this.elementDisplay.focus();
	},

	hide: function(e) {
		if (this.showing) {
			if (this.options.useFx) {
				this.fx.start('opacity', 1, 0).chain(function() {
					this.elementOptions.scrollTop = 0;
					this.elementOptions.setStyle('display', 'none');

					if (this.focused) {
						this.focused.removeClass(this.options.selectClass);
					}
					this.showing = this.focused = false;
				}.bind(this));
			} else {
				this.elementOptions.setStyle('display', 'none');

				if (this.focused) {
					this.focused.removeClass(this.options.selectClass);
				}
				this.showing = this.focused = false;
			}

			this.fireEvent('hide');
		}

		this.textSearch = '';
	}
});



/* FORM.CHECK */

var FormCheck = new Class({
	
	Implements: [Options, Events],

	options : {
		
		tipsClass: 'fc-tbx',				//tips error class
		errorClass: 'fc-error',				//div error class
		fieldErrorClass: 'fc-field-error',	//error class for elements
		
		trimValue : false,					//trim (remove whitespaces before and after) the value
		validateDisabled : false,			//skip validation on disabled input if set to false.
		
		submitByAjax : false,				//false : standard submit way, true : submit by ajax
		ajaxResponseDiv : false,			//element to inject ajax response into (can also use onAjaxSuccess) [cronix] 
		ajaxEvalScripts : false,			//use evalScripts in the Request response [cronix] 
		onAjaxRequest : $empty,				//Function to fire when the Request event starts 
		onAjaxSuccess : $empty,				//Function to fire when the Request receives .  Args: response [the request response] - see Mootools docs for Request.onSuccess 
		onAjaxFailure : $empty,				//Function to fire if the Request fails 

		display : {
			showErrors : 0,
			titlesInsteadNames : 0,
			errorsLocation : 1,
			indicateErrors : 1,
			indicateErrorsInit : 0,
			keepFocusOnError : 0,
			checkValueIfEmpty : 1,
			addClassErrorToField : 0,
			fixPngForIe : 1,
			replaceTipsEffect : 1,
			flashTips : 0,
			closeTipsButton : 1,
			tipsPosition : "left",
			tipsOffsetX : -30,
			tipsOffsetY : -15,
			listErrorsAtTop : false,
			scrollToFirst : true,
			fadeDuration : 300
		},
		
		alerts : {
			required: "This field is required.",
			alpha: "This field accepts alphabetic characters only.",
			alphanum: "This field accepts alphanumeric characters only.",
			nodigit: "No digits are accepted.",
			digit: "Please enter a valid integer.",
			digitltd: "The value must be between %0 and %1",
			number: "Please enter a valid number.",
			email: "Please enter a valid email.",
			phone: "Please enter a valid phone.",
			url: "Please enter a valid url.",
			
			confirm: "This field is different from %0",
			differs: "This value must be different of %0",
			length_str: "The length is incorrect, it must be between %0 and %1",
			length_fix: "The length is incorrect, it must be exactly %0 characters",
			lengthmax: "The length is incorrect, it must be at max %0",
			lengthmin: "The length is incorrect, it must be at least %0",
			checkbox: "Please check the box",
			radios: "Please select a radio",
			select: "Please choose a value"
		},
		
		regexp : {
			required : /[^.*]/,
			alpha : /^[a-z ._-]+$/i,
			alphanum : /^[a-z0-9 ._-]+$/i,
			digit : /^[-+]?[0-9]+$/,
			nodigit : /^[^0-9]+$/,
			number : /^[-+]?\d*\.?\d+$/,
			email : /^[a-z0-9._%-]+@[a-z0-9.-]+\.[a-z]{2,4}$/i,
			phone : /^[\d\s ().-]+$/,
			url : /^(http|https|ftp)\:\/\/[a-z0-9\-\.]+\.[a-z]{2,3}(:[a-z0-9]*)?\/?([a-z0-9\-\._\?\,\'\/\\\+&amp;%\$#\=~])*$/i
		}
	},
	
	/*
	Constructor: initialize
		Constructor
	
		Add event on formular and perform some stuff, you now, like settings, ...
	*/
	initialize : function(form, options) {
		if (this.form = $(form)) {
			this.form.isValid = true;
			this.regex = ['length'];
			this.setOptions(options);
			
			//internalization
			if (typeof(formcheckLanguage) != 'undefined') this.options.alerts = $merge(this.options.alerts, formcheckLanguage);
			
			this.validations = [];
			this.alreadyIndicated = false;
			this.firstError = false;
			
			var regex = new Hash(this.options.regexp);
			regex.each(function(el, key) {
				this.regex.push(key);
			}, this);

			this.form.getElements("*[class*=validate]").each(function(el) {
				this.register(el);
			}, this);
			
			this.form.addEvents({
				"submit": this.onSubmit.bind(this)
			});
			
			if(this.options.display.fixPngForIe) this.fixIeStuffs();
			document.addEvent('mousewheel', function(){
				this.isScrolling = false;
			}.bind(this));
		}
	},
	
	/*
	Function: register
		Allows you to declare afterward new fields to the formcheck, to check dynamically loaded fields for example.
	
	Example:
		(code)
		<script type="text/javascript">
			window.addEvent('domready', function() {
				formcheck = new FormCheck('form_id');
			});
			
			// ...some code...
			
			var newField = new Element('input', {
				class	: "validate['required']",
				name	: "new-field"
			}).inject('form_id');
			formcheck.register(newField);
			
			new Element('input', {
				class	: "validate['required']",
				name	: "another-field",
				id		: "another-field"
			}).inject('form_id');
			formcheck.register($('another-field'));
		</script>
		(end code)
	
	See also:
		<FormCheck::dispose>
	*/
	register : function(el) {
		el.validation = [];
		el.getProperty("class").split(' ').each(function(classX) {
			if(classX.match(/^validate(\[.+\])$/)) {
				var validators = eval(classX.match(/^validate(\[.+\])$/)[1]);
				for(var i = 0; i < validators.length; i++) {
					el.validation.push(validators[i]);
					if (validators[i].match(/^confirm\[/)) {
						var field = eval(validators[i].match(/^.+(\[.+\])$/)[1].replace(/([A-Z0-9\._-]+)/i, "'$1'"));
						if (this.form[field].validation.contains('required')){
							el.validation.push('required');
						}
							
					}
				}
				this.addListener(el);
			}
		}, this);
	},
	
	/*
	Function: dispose
		Allows you to remove a declared field from formCheck
	
	Example:
		(code)
		<script type="text/javascript">
			window.addEvent('domready', function() {
				formcheck = new FormCheck('form_id');
			});
			
			// ...some code...
			
			formcheck.dispose($('obsolete-field'));
		</script>
		(end code)
	
	See also:
		<FormCheck::register>
	*/
	dispose : function(element) {
		this.validations.erase(element);
	},
	
	/*
	Function: addListener
		Private method
		
		Add listener on fields
	*/
	addListener : function(el) {
		this.validations.push(el);
		el.errors = [];
		
		if (this.options.display.indicateErrorsInit) {
			this.validations.each(function(el) {
				if(!this.manageError(el,'submit')) this.form.isValid = false;
			}, this);
			return true;
		} 
	
		if (el.validation[0] == 'submit') {
			el.addEvent('click', function(e){
				this.onSubmit(e);
			}.bind(this));
			return true;
		}

		if (this.isChildType(el) == false) el.addEvent('blur', function() {
			(function(){
				if(!this.fxRunning && (el.element || this.options.display.showErrors == 1) && (this.options.display.checkValueIfEmpty || el.value))
				this.manageError(el, 'blur')
			}.bind(this)).delay(100);
		}.bind(this))
		//We manage errors on radio
		else if (this.isChildType(el) == true) {
			//We get all radio from the same group and add a blur option
			var nlButtonGroup = this.form.getElements('input[name="'+ el.getProperty("name") +'"]');
			nlButtonGroup.each(function(radio){
				radio.addEvent('blur', function(){
					(function(){
						if((el.element || this.options.display.showErrors == 1) && (this.options.display.checkValueIfEmpty || el.value)) this.manageError(el, 'click');
					}.bind(this)).delay(100);
				}.bind(this))
			},this);
		}
	},
	
	/*
	Function: validate
		Private method
		
		Dispatch check to other methods
	*/
	validate : function(el) {
		el.errors = [];
		el.isOk = true;
		
		//skip validation and trim if specified
		if (!this.options.validateDisabled && el.get('disabled')) return true;
		if (this.options.trimValue && el.value) el.value = el.value.trim();
		
		el.validation.each(function(rule) {
			if(this.isChildType(el)) {
				if (this.validateGroup(el) == false) {
					el.isOk = false;
				}
			} else {
				var ruleArgs = [];
				
				if(rule.match(/^.+\[/)) {
					var ruleMethod = rule.split('[')[0];
					ruleArgs = eval(rule.match(/^.+(\[.+\])$/)[1].replace(/([A-Z0-9\._-]+)/i, "'$1'"));
				} else var ruleMethod = rule;
				
				if (this.regex.contains(ruleMethod) && el.get('tag') != "select") {
					if (this.validateRegex(el, ruleMethod, ruleArgs) == false) {
						el.isOk = false;
					}
				}
				
				if (ruleMethod == 'confirm') {
					if (this.validateConfirm(el, ruleArgs) == false) {
						el.isOk = false;
					}
				}
				if (ruleMethod == 'differs') {
					if (this.validateDiffers(el, ruleArgs) == false) {
						el.isOk = false;
					}
				}
				if (el.get('tag') == "select" || (el.type == "checkbox" && ruleMethod == 'required')) {
					if (this.simpleValidate(el) == false) {
						el.isOk = false;
					}
				}
				if(rule.match(/%[A-Z0-9\._-]+$/i) || (el.isOk && rule.match(/~[A-Z0-9\._-]+$/i))) {
					if(eval(rule.slice(1)+'(el)') == false) {
						el.isOk = false;
					}
				}
			}
		}, this);
		
		if (el.isOk) return true;
		else return false;
	},
	
	/*
	Function: simpleValidate
		Private method
		
		Perform simple check for select fields and checkboxes
	*/
	simpleValidate : function(el) {
		if (el.get('tag') == 'select' && el.selectedIndex <= 0) {
			el.errors.push(this.options.alerts.select);
			return false;
		} else if (el.type == "checkbox" && el.checked == false) {
			el.errors.push(this.options.alerts.checkbox);
			return false;
		}
		return true;
	},
	
	/*
	Function: validateRegex
		Private method
		
		Perform regex validations
	*/
	validateRegex : function(el, ruleMethod, ruleArgs) {
		var msg = "";
		if (ruleArgs[1] && ruleMethod == 'length') {
			if (ruleArgs[1] == -1) {
				this.options.regexp.length = new RegExp("^[\\s\\S]{"+ ruleArgs[0] +",}$");
				msg = this.options.alerts.lengthmin.replace("%0",ruleArgs[0]);
			} else if(ruleArgs[0] == ruleArgs[1]) {
				this.options.regexp.length = new RegExp("^[\\s\\S]{"+ ruleArgs[0] +"}$");
				msg = this.options.alerts.length_fix.replace("%0",ruleArgs[0]);
			} else {
				this.options.regexp.length = new RegExp("^[\\s\\S]{"+ ruleArgs[0] +","+ ruleArgs[1] +"}$");
				msg = this.options.alerts.length_str.replace("%0",ruleArgs[0]).replace("%1",ruleArgs[1]);
			}
		} else if (ruleArgs[0] && ruleMethod == 'length') {
			this.options.regexp.length = new RegExp("^.{0,"+ ruleArgs[0] +"}$");
			msg = this.options.alerts.lengthmax.replace("%0",ruleArgs[0]);
		} else {
			msg = this.options.alerts[ruleMethod];
		}
		if (ruleArgs[1] && ruleMethod == 'digit') {
			var regres = true;
			if (!this.options.regexp.digit.test(el.value)) {
				el.errors.push(this.options.alerts[ruleMethod]);
				regres = false;
			}
			if (ruleArgs[1] == -1) {
				if (el.value >= ruleArgs[0]) var valueres = true; else var valueres = false;
				msg = this.options.alerts.digitmin.replace("%0",ruleArgs[0]);
			} else {
				if (el.value >= ruleArgs[0] && el.value <= ruleArgs[1]) var valueres = true; else var valueres = false;
				msg = this.options.alerts.digitltd.replace("%0",ruleArgs[0]).replace("%1",ruleArgs[1]);
			}
			if (regres == false || valueres == false) {
				el.errors.push(msg);
				return false;
			}
		} else if (this.options.regexp[ruleMethod].test(el.value) == false)  {
			el.errors.push(msg);
			return false;
		}
		return true;
	},

	/*
	Function: validateConfirm
		Private method
		
		Perform confirm validations
	*/
	validateConfirm: function(el,ruleArgs) {
		
		var confirm = ruleArgs[0];
		if(el.value != this.form[confirm].value){
			if (this.options.display.titlesInsteadNames)
				var msg = this.options.alerts.confirm.replace("%0",this.form[confirm].getProperty('title'));
			else
				var msg = this.options.alerts.confirm.replace("%0",confirm);
			el.errors.push(msg);
			return false;
		}
		return true;
	},
	
	/*
	Function: validateDiffers
		Private method
		
		Perform differs validations
	*/
	validateDiffers: function(el,ruleArgs) {
		var differs = ruleArgs[0];
		if(el.value == this.form[differs].value){
			if (this.options.display.titlesInsteadNames)
				var msg = this.options.alerts.differs.replace("%0",this.form[differs].getProperty('title'));
			else
				var msg = this.options.alerts.differs.replace("%0",differs);
			el.errors.push(msg);
			return false;
		}
		return true;
	},
	
	/*
	Function: isChildType
		Private method
		
		Determine if the field is a group of radio or not.
	*/
	isChildType: function(el) {
		return ($defined(el.type) && el.type == 'radio') ? true : false;
	},
	
	/*
	Function: validateGroup
		Private method
		
		Perform radios validations
	*/
	validateGroup : function(el) {
		el.errors = [];
		var nlButtonGroup = this.form[el.getProperty("name")];
		el.group = nlButtonGroup;
		var cbCheckeds = false;
		
		for(var i = 0; i < nlButtonGroup.length; i++) {
			if(nlButtonGroup[i].checked) {
				cbCheckeds = true;
			}
		}
		if(cbCheckeds == false) {
			el.errors.push(this.options.alerts.radios);
			return false;
		} else {
			return true;	
		}
	},
	
	/*
	Function: listErrorsAtTop
		Private method
		
		Display errors
	*/
	listErrorsAtTop : function(obj) {
		if(!this.form.element) {
			 this.form.element = new Element('div', {'id' : 'errorlist', 'class' : this.options.errorClass}).injectTop(this.form);
		}
		if ($type(obj) == 'collection') {
			new Element('p').set('html',"<span>" + obj[0].name + " : </span>" + obj[0].errors[0]).injectInside(this.form.element);
		} else {
			if ((obj.validation.contains('required') && obj.errors.length > 0) || (obj.errors.length > 0 && obj.value && obj.validation.contains('required') == false)) {
				obj.errors.each(function(error) {
					new Element('p').set('html',"<span>" + obj.name + " : </span>" + error).injectInside(this.form.element);
				}, this);
			}
		}
	},
	
	/*
	Function: manageError
		Private method
		
		Manage display of errors boxes
	*/
	manageError : function(el, method) {
		var isValid = this.validate(el);
		if ((!isValid && el.validation.flatten()[0].contains('confirm[')) || (!isValid && el.validation.contains('required')) || (!el.validation.contains('required') && el.value && !isValid)) {
			if(this.options.display.listErrorsAtTop == true && method == 'submit')
				this.listErrorsAtTop(el, method);
			if (this.options.display.indicateErrors == 2 ||this.alreadyIndicated == false || el.name == this.alreadyIndicated.name)
			{
				if(!this.firstError) this.firstError = el;
				
				this.alreadyIndicated = el;
				
				if (this.options.display.keepFocusOnError && el.name == this.firstError.name) (function(){el.focus()}).delay(20);
				this.addError(el);
				return false;
			}
		} else if ((isValid || (!el.validation.contains('required') && !el.value)) && el.element) {
			this.removeError(el);
			return true;
		}
		return true;
	},
	
	/*
	Function: addError
		Private method
		
		Add error message
	*/
	addError : function(obj) {
		if(!obj.element && this.options.display.indicateErrors != 0) {
			if (this.options.display.errorsLocation == 1) {
				var pos = (this.options.display.tipsPosition == 'left') ? obj.getCoordinates().left : obj.getCoordinates().right;
				var options = {
					'opacity' : 0,
					'position' : 'absolute',
					'float' : 'left',
					'left' : pos + this.options.display.tipsOffsetX
				}
				obj.element = new Element('div', {'class' : this.options.tipsClass, 'styles' : options}).injectInside(document.body);
				this.addPositionEvent(obj);
			} else if (this.options.display.errorsLocation == 2){
				obj.element = new Element('div', {'class' : this.options.errorClass, 'styles' : {'opacity' : 0}}).injectBefore(obj);
			} else if (this.options.display.errorsLocation == 3){
				obj.element = new Element('div', {'class' : this.options.errorClass, 'styles' : {'opacity' : 0}});
				if ($type(obj.group) == 'object' || $type(obj.group) == 'collection')
					obj.element.injectAfter(obj.group[obj.group.length-1]);
				else
					obj.element.injectAfter(obj);
			}
		}					
		if (obj.element && obj.element != true) {
			obj.element.empty();
			if (this.options.display.errorsLocation == 1) {
				var errors = [];
				obj.errors.each(function(error) {
					errors.push(new Element('p').set('html', error));
				});
				var tips = this.makeTips(errors).injectInside(obj.element);
				if(this.options.display.closeTipsButton) {
					tips.getElements('a.close').addEvent('mouseup', function(){
						this.removeError(obj);
					}.bind(this));
				}
				obj.element.setStyle('top', obj.getCoordinates().top - tips.getCoordinates().height + this.options.display.tipsOffsetY);
			} else {
				obj.errors.each(function(error) {
					new Element('p').set('html',error).injectInside(obj.element);
				});
			}
			
			if (!this.options.display.fadeDuration || Browser.Engine.trident && Browser.Engine.version == 5 && this.options.display.errorsLocation < 2) {
				obj.element.setStyle('opacity', 1);
			} else {
				obj.fx = new Fx.Tween(obj.element, {
					'duration' : this.options.display.fadeDuration,
					'ignore' : true,
					'onStart' : function(){
						this.fxRunning = true;
					}.bind(this),
					'onComplete' : function() {
						this.fxRunning = false;
						if (obj.element && obj.element.getStyle('opacity').toInt() == 0) {
							obj.element.destroy();
							obj.element = false;
						}
					}.bind(this)
				})
				if(obj.element.getStyle('opacity').toInt() != 1) obj.fx.start('opacity', 1);
			}
		}
		if (this.options.display.addClassErrorToField && this.isChildType(obj) == false){
			obj.addClass(this.options.fieldErrorClass);
			obj.element = obj.element || true;
		}
			
	},
	
	/*
	Function: addPositionEvent
		
		Update tips position after a browser resize
	*/
	addPositionEvent : function(obj) {
		if(this.options.display.replaceTipsEffect) {
			obj.event = function(){
				new Fx.Morph(obj.element, {
					'duration' : this.options.display.fadeDuration
				}).start({ 
					'left':[obj.element.getStyle('left'), obj.getCoordinates().right + this.options.display.tipsOffsetX],
					'top':[obj.element.getStyle('top'), obj.getCoordinates().top - obj.element.getCoordinates().height + this.options.display.tipsOffsetY]
				});
			}.bind(this);
			
		} else {
			obj.event = function(){
				obj.element.setStyles({ 
					'left':obj.getCoordinates().right + this.options.display.tipsOffsetX,
					'top':obj.getCoordinates().top - obj.element.getCoordinates().height + this.options.display.tipsOffsetY
				});
			}.bind(this)
		}
		window.addEvent('resize', obj.event);
	},
	
	/*
	Function: removeError
		Private method
		
		Remove the error display
	*/
	removeError : function(obj) {
		this.alreadyIndicated = false;
		obj.errors = [];
		obj.isOK = true;
		window.removeEvent('resize', obj.event);
		if (this.options.display.errorsLocation >= 2 && obj.element) {
			new Fx.Tween(obj.element, {
				'duration': this.options.display.fadeDuration
			}).start('height', 0);
		}
		if (!this.options.display.fadeDuration || Browser.Engine.trident && Browser.Engine.version == 5 && this.options.display.errorsLocation == 1 && obj.element) {
			this.fxRunning = true;
			obj.element.destroy();
			obj.element = false;
			(function(){this.fxRunning = false}.bind(this)).delay(200);
		} else if (obj.element && obj.element != true) {
			obj.fx.start('opacity', 0);
		}
		
		if (this.options.display.addClassErrorToField && !this.isChildType(obj))
			obj.removeClass(this.options.fieldErrorClass);
	},
	
	/*
	Function: focusOnError
		Private method
		
		Create set the focus to the first field with an error if needed
	*/
	focusOnError : function (obj) {
		if (this.options.display.scrollToFirst && !this.alreadyFocused && !this.isScrolling) {
			if (!this.options.display.indicateErrors || !this.options.display.errorsLocation) {
				var dest = obj.getCoordinates().top-30;
			} else if (this.alreadyIndicated.element) {
				switch (this.options.display.errorsLocation){
					case 1 : 
						var dest = obj.element.getCoordinates().top;
						break;
					case 2 :
						var dest = obj.element.getCoordinates().top-30;
						break;
					case 3 :
						var dest = obj.getCoordinates().top-30;
						break;
				}
				this.isScrolling = true;
			}
			if (window.getScroll.y != dest) {
				new Fx.Scroll(window, {
					onComplete : function() {
						this.isScrolling = false;
						obj.focus();
					}.bind(this)
				}).start(0,dest);
			} else {
				this.isScrolling = false;
				obj.focus();
			}
			this.alreadyFocused = true;
		}
	},
	
	/*
	Function: fixIeStuffs
		Private method
		
		Fix png for IE6
	*/
	fixIeStuffs : function () {
		if (Browser.Engine.trident4) {
			//We fix png stuffs
			var rpng = new RegExp('url\\(([\.a-zA-Z0-9_/:-]+\.png)\\)');
			var search = new RegExp('(.+)formcheck\.css');
			for (var i = 0; i < document.styleSheets.length; i++){
				if (document.styleSheets[i].href.match(/formcheck\.css$/)) {
					var root = document.styleSheets[i].href.replace(search, '$1');
					var count = document.styleSheets[i].rules.length;
					for (var j = 0; j < count; j++){
						var cssstyle = document.styleSheets[i].rules[j].style;
						var bgimage = root + cssstyle.backgroundImage.replace(rpng, '$1');
						if (bgimage && bgimage.match(/\.png/i)){
							var scale = (cssstyle.backgroundRepeat == 'no-repeat') ? 'crop' : 'scale';
							cssstyle.filter =  'progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, src=\'' + bgimage + '\', sizingMethod=\''+ scale +'\')';
							cssstyle.backgroundImage = "none";
						}
					}
				}
			}
		}
	},
	
	/*
	Function: makeTips
		Private method
		
		Create tips boxes
	*/
	makeTips : function(txt) {
		var table = new Element('table');
			table.cellPadding ='0';
			table.cellSpacing ='0';
			table.border ='0';
			
			var tbody = new Element('tbody').injectInside(table);
				var tr1 = new Element('tr').injectInside(tbody);
					new Element('td', {'class' : 'tl'}).injectInside(tr1);
					new Element('td', {'class' : 't'}).injectInside(tr1);
					new Element('td', {'class' : 'tr'}).injectInside(tr1);
				var tr2 = new Element('tr').injectInside(tbody);
					new Element('td', {'class' : 'l'}).injectInside(tr2);
					var cont = new Element('td', {'class' : 'c'}).injectInside(tr2);
						var errors = new Element('div', {'class' : 'err'}).injectInside(cont);
						txt.each(function(error) {
							error.injectInside(errors);
						});
						if (this.options.display.closeTipsButton) new Element('a',{'class' : 'close'}).injectInside(cont);
					new Element('td', {'class' : 'r'}).injectInside(tr2);
				var tr3 = new Element('tr').injectInside(tbody);
					new Element('td', {'class' : 'bl'}).injectInside(tr3);
					new Element('td', {'class' : 'b'}).injectInside(tr3);
					new Element('td', {'class' : 'br'}).injectInside(tr3);			
		return table;
	},
	
	/*
	Function: reinitialize
		Private method		
		
		Reinitialize form before submit check
	*/
	reinitialize: function() {
		this.validations.each(function(el) {
			if (el.element) {
				el.errors = [];
				el.isOK = true;
				if(this.options.display.flashTips == 1) {
					el.element.destroy();
					el.element = false;
				}
			}
		}, this);
		if (this.form.element) this.form.element.empty();
		this.alreadyFocused = false;
		this.firstError = false;
		this.elementToRemove = this.alreadyIndicated;
		this.alreadyIndicated = false;
		this.form.isValid = true;
	},
	
	/*
	Function: submitByAjax
		Private method		
		
		Send the form by ajax, and replace the form with response
	*/
	
	submitByAjax: function() {
		var url = this.form.getProperty('action');
		this.fireEvent('ajaxRequest');
		new Request({
			url: url,
			method: this.form.getProperty('method'),
			data : this.form.toQueryString(),
			evalScripts: this.options.ajaxEvalScripts,
			onFailure: function(instance){
				this.fireEvent('ajaxFailure', instance);
			}.bind(this),
			onSuccess: function(result){
				this.fireEvent('ajaxSuccess', result);
				if(this.options.ajaxResponseDiv) $(this.options.ajaxResponseDiv).set('html',result);
			}.bind(this)
		}).send();
	},
	
	/*
	Function: onSubmit
		Private method		
		
		Perform check on submit action
	*/
	onSubmit: function(event) {
		this.reinitialize();
	
		this.validations.each(function(el) {
			var validation = this.manageError(el,'submit');
			if(!validation) this.form.isValid = false;
		}, this);
	    
		if (this.form.isValid) {
			if (this.options.submitByAjax) {
				new Event(event).stop();
				this.submitByAjax();
			}
		} else {
			new Event(event).stop();
			if (this.elementToRemove && this.elementToRemove != this.firstError && this.options.display.indicateErrors == 1) {
				this.removeError(this.elementToRemove);
			}
			this.focusOnError(this.firstError)
		}
	}
});




window.addEvent('domready', function() { 
	myCal = new Calendar({ date: 'D, M jS'}, { direction: .5, blocked: ['0 * * 0,6'], tweak: { x: -12, y: -10 } });
var helpform = new FormCheck('helpform', {
					flashTips : '1',
					display : {
						scrollToFirst : false
					},
					alerts : {
						required : 'Please fill in this field.'
					}
				})
var my_select = new MavSelectBox('time');
});
