// JavaScript Document
// handles all javascript executions that need to be on window load
function init() {
	// start loading random page background images
	if((typeof showRndBG) != 'undefined' && (noBG > 0)){
		setBackgroundImg();
	}
	// this is for instatiating in the signup form
	if((typeof initSignUp) != 'undefined'){
		addEvents($('formSignUp'));
	}
	// this is for instatiating in the profile form
	if((typeof initFormProfile) != 'undefined' ){
		addEvents($('formProfile'));
	}
}

// Helper function to count the number of days in a given month since Javascript doesn't have
// this functionality natively.
Date.prototype.getDaysInMonth = function(yyyy,m)
{
	var curMonth = m? m : this.getUTCMonth();
	var tmpDate = new Date(yyyy? yyyy : this.getUTCFullYear(), m? m : this.getUTCMonth(), 1);
	var count = 0;
	do
	{
		tmpDate.setUTCDate((tmpDate.getUTCDate()+1));
		count++;
	}while(tmpDate.getUTCMonth() == curMonth); 
	return count--;
}

Date.prototype.getWeekOfMonth = function() {
	var now = new Date();
    var todayDayOfMonth = now.getDate() - 1;
    var first = new Date(now.getFullYear() + '/' + (now.getMonth() + 1) + '/01');
   	var monthFirstDateDay = first.getDay();
   	return Math.ceil((todayDayOfMonth + monthFirstDateDay) / 7);
}

Date.prototype.format = function(format) {
	var returnStr = '';
	Date.replace = Date.replaceChars;
	for (var i = 0; i < format.length; i++) {
		var curChar = format.charAt(i);
		
		if (typeof Date.replace[curChar] != 'undefined')
			returnStr += Date.replace[curChar].call(this);
		else
			returnStr += curChar;
	}
	return returnStr;
};

Date.replaceChars = {
	shortMonths: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
	longMonths: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
	shortDays: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
	longDays: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
	
	// Day
	d: function() { return (this.getDate() < 10 ? '0' : '') + this.getDate(); },
	D: function() { return Date.replace.shortDays[this.getDay()]; },
	j: function() { return this.getDate(); },
	l: function() { return Date.replace.longDays[this.getDay()]; },
	N: function() { return this.getDay() + 1; },
	S: function() { return (this.getDate() % 10 == 1 && this.getDate() != 11 ? 'st' : (this.getDate() % 10 == 2 && this.getDate() != 12 ? 'nd' : (this.getDate() % 10 == 3 && this.getDate() != 13 ? 'rd' : 'th'))); },
	w: function() { return this.getDay(); },
	z: function() { return "Not Yet Supported"; },
	// Week
	W: function() { return "Not Yet Supported"; },
	// Month
	F: function() { return Date.replace.longMonths[this.getMonth()]; },
	m: function() { return (this.getMonth() < 9 ? '0' : '') + (this.getMonth() + 1); },
	M: function() { return Date.replace.shortMonths[this.getMonth()]; },
	n: function() { return this.getMonth() + 1; },
	t: function() { return "Not Yet Supported"; },
	// Year
	L: function() { return "Not Yet Supported"; },
	o: function() { return "Not Supported"; },
	Y: function() { return this.getFullYear(); },
	y: function() { return ('' + this.getFullYear()).substr(2); },
	// Time
	a: function() { return this.getHours() < 12 ? 'am' : 'pm'; },
	A: function() { return this.getHours() < 12 ? 'AM' : 'PM'; },
	B: function() { return "Not Yet Supported"; },
	g: function() { return this.getHours() == 0 ? 12 : (this.getHours() > 12 ? this.getHours() - 12 : this.getHours()); },
	G: function() { return this.getHours(); },
	h: function() { return (this.getHours() < 10 || (12 < this.getHours() < 22) ? '0' : '') + (this.getHours() < 10 ? this.getHours() + 1 : this.getHours() - 12); },
	H: function() { return (this.getHours() < 10 ? '0' : '') + this.getHours(); },
	i: function() { return (this.getMinutes() < 10 ? '0' : '') + this.getMinutes(); },
	s: function() { return (this.getSeconds() < 10 ? '0' : '') + this.getSeconds(); },
	// Timezone
	e: function() { return "Not Yet Supported"; },
	I: function() { return "Not Supported"; },
	O: function() { return (this.getTimezoneOffset() < 0 ? '-' : '+') + (this.getTimezoneOffset() / 60 < 10 ? '0' : '') + (this.getTimezoneOffset() / 60) + '00'; },
	T: function() { return "Not Yet Supported"; },
	Z: function() { return this.getTimezoneOffset() * 60; },
	// Full Date/Time
	c: function() { return "Not Yet Supported"; },
	r: function() { return this.toString(); },
	U: function() { return this.getTime() / 1000; }
}
var header = { "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" };
window.onload = init;