/* javascript */
$(function()
{
	var myImage = new Image();
	myImage.src = thisimage;
	
	var babyImage = new Image();
	babyImage.src = baby_icon;	//'skins/1274/styles/images/due_date_baby.png';
	
	$('#due-date, #due-date-alt').datepicker();
	
	$('input[rel=calc_method]')
	.bind('click', function()
	{
		if( $(this).val() == 'conception' )
		{
			$('#text1').fadeOut('slow');
			$('#text2').fadeIn('slow');
		}
		else
		{
			$('#text2').fadeOut('slow');
			$('#text1').fadeIn('slow');
		}
	});
	
	var Msg = function()
	{
		var ths = this;
		this.show  = 
			{
				success	 :	function(obj, data, method)
					{
						var html = '<div class="due-date-results"><a href="'+ thisimagetitle +'/view-item?ItemID='+ thisimageid +'"><img src="'+ myImage.src +'" id="due-date-pregnancy-img" title="'+ thisimagetitle +'"/></a>You can expect to meet your baby on or around<br><div class="bold" id="dueDate"><span>'+ data +'</span></div><br>'+ method +'<br><div id="due-date-alt-container"><input type="text" name="due_date" id="due-date-alt" value="" /> change date.</div><small>NOTE: This tool should only be used to estimate your due date. Consult your physician to get your actual due date.</small></div>';
						
						ths.show.dialog($('#due-date-dialog-modal'), html, 'Congratulations!!!');
						var color1 = '4d7802'; color2 = 'e0fcb9';
					},
			
				error	:	function(obj, data)
					{
						var html = '<span class="bold">Oops: there was an error - </span><br>'+ data;
						
						ths.show.dialog($('#due-date-dialog-modal'), html, 'Oops: error!!!');
						
						var color1 = 'be5752'; color2 = 'efa9a7';
					},
					
				dialog	:	function(obj, html, title)
					{
						obj
						.attr('title', title)
						.html(html)
						.dialog( 
						{
							autoOpen: false,
							height: 275,
							width: 500,
							modal: false,
							zIndex: 2,
							position: [($('#column-main').offset().left + ($('#column-main').width() - 500)/4), ($('.module_pregnancycalculator').offset().top + $('.module_pregnancycalculator').height() + 20 - $(window).scrollTop())],
							buttons: 
							{ 
								"Update": function() 
								{ 
									$('#due-date-submit').trigger('click');
								},
								"Hide": function() 
								{ 
									$(this).dialog("close");
								}
							},					
							closeOnEscape: true
						});
						
						obj.dialog('open');
						
						if( $('#dueDate').length )
							$('#dueDate').effect('pulsate');
							
						$('#due-date-alt')
						.datepicker({
							onSelect: function(dateText, inst)
							{
								$('#due-date').val(dateText);
							}
						});
						
					}
			}
	}
	
	var myMsg = new Msg();
	
	$('#due-date-submit')
	.live('click', function()
	{
		var method = $('input[rel=calc_method]:checked').val();
		var date = $('#due-date').val();
			
		if( !$('input[rel=calc_method]:checked').length || !$('#due-date').val().length )
			myMsg.show.error($('#due-date-calculator'), 'Please select both a Calculation Method and the Date.', 'Oops: error!!!');
		else if( !/[0-9]{2}\/[0-9]{2}\/[0-9]{4}/.test(date) )
		{
			myMsg.show.error($('#due-date-calculator'), 'Date format is incorrect. Please use the date picker or enter like mm/dd/yyyy.', 'Oops: error!!!');
		}
		else
		{
			var myDate = new DueDate(date);
			myDate.calculate(method);
		}
		return false;
	});
	
	var DueDate = function(date)
	{
		this.date_parts = date.split('/');
		this.dateObj = {month: this.date_parts[0], day: this.date_parts[1], year: this.date_parts[2]};
		this.startDate = new Date(this.dateObj['year'], this.dateObj['month'], this.dateObj['day']);
		this.period = {days: (280 * 24 * 60 * 60 * 1000), text: 'using the first day of your last period.'};
		this.conception = {days: (266 * 24 * 60 * 60 * 1000), text: 'using the date of conception.'};
		this.naegele = {days: ((365 - 90 + 7) * 24 * 60 * 60 * 1000), text: 'using Naegele\'s Rule.'};
		this.offset = (30 * 24 * 60 * 60 * 1000);
		
		this.calculate = function(method)
		{
			this.startDate.setTime((this.startDate.getTime() + this[method].days - this.offset));
			myMsg.show.success($('#due-date-calculator'), this.startDate.format('fullDate'), this[method].text);
		}
	}
});

/*
 * Date Format 1.2.3
 * (c) 2007-2009 Steven Levithan <stevenlevithan.com>
 * MIT license
 *
 * Includes enhancements by Scott Trenda <scott.trenda.net>
 * and Kris Kowal <cixar.com/~kris.kowal/>
 *
 * Accepts a date, a mask, or a date and a mask.
 * Returns a formatted version of the given date.
 * The date defaults to the current date/time.
 * The mask defaults to dateFormat.masks.default.
 */

var dateFormat = function () {
	var	token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
		timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
		timezoneClip = /[^-+\dA-Z]/g,
		pad = function (val, len) {
			val = String(val);
			len = len || 2;
			while (val.length < len) val = "0" + val;
			return val;
		};

	// Regexes and supporting functions are cached through closure
	return function (date, mask, utc) {
		var dF = dateFormat;

		// You can't provide utc if you skip other args (use the "UTC:" mask prefix)
		if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
			mask = date;
			date = undefined;
		}

		// Passing date through Date applies Date.parse, if necessary
		date = date ? new Date(date) : new Date;
		if (isNaN(date)) throw SyntaxError("invalid date");

		mask = String(dF.masks[mask] || mask || dF.masks["default"]);

		// Allow setting the utc argument via the mask
		if (mask.slice(0, 4) == "UTC:") {
			mask = mask.slice(4);
			utc = true;
		}

		var	_ = utc ? "getUTC" : "get",
			d = date[_ + "Date"](),
			D = date[_ + "Day"](),
			m = date[_ + "Month"](),
			y = date[_ + "FullYear"](),
			H = date[_ + "Hours"](),
			M = date[_ + "Minutes"](),
			s = date[_ + "Seconds"](),
			L = date[_ + "Milliseconds"](),
			o = utc ? 0 : date.getTimezoneOffset(),
			flags = {
				d:    d,
				dd:   pad(d),
				ddd:  dF.i18n.dayNames[D],
				dddd: dF.i18n.dayNames[D + 7],
				m:    m + 1,
				mm:   pad(m + 1),
				mmm:  dF.i18n.monthNames[m],
				mmmm: dF.i18n.monthNames[m + 12],
				yy:   String(y).slice(2),
				yyyy: y,
				h:    H % 12 || 12,
				hh:   pad(H % 12 || 12),
				H:    H,
				HH:   pad(H),
				M:    M,
				MM:   pad(M),
				s:    s,
				ss:   pad(s),
				l:    pad(L, 3),
				L:    pad(L > 99 ? Math.round(L / 10) : L),
				t:    H < 12 ? "a"  : "p",
				tt:   H < 12 ? "am" : "pm",
				T:    H < 12 ? "A"  : "P",
				TT:   H < 12 ? "AM" : "PM",
				Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""),
				o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4),
				S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10]
			};

		return mask.replace(token, function ($0) {
			return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1);
		});
	};
}();

// Some common format strings
dateFormat.masks = {
	"default":      "ddd mmm dd yyyy HH:MM:ss",
	shortDate:      "m/d/yy",
	mediumDate:     "mmm d, yyyy",
	longDate:       "mmmm d, yyyy",
	fullDate:       "dddd, mmmm d, yyyy",
	shortTime:      "h:MM TT",
	mediumTime:     "h:MM:ss TT",
	longTime:       "h:MM:ss TT Z",
	isoDate:        "yyyy-mm-dd",
	isoTime:        "HH:MM:ss",
	isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss",
	isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'"
};

// Internationalization strings
dateFormat.i18n = {
	dayNames: [
		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
		"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	],
	monthNames: [
		"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
		"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
	]
};

// For convenience...
Date.prototype.format = function (mask, utc) {
	return dateFormat(this, mask, utc);
};