// Our Javascript Library.
$(document).ready(function(){
	function Open(id)
	{
		document.getElementById(id).style.display='block';
	}
	function Close(id)
	{
		document.getElementById(id).style.display='none';
	}
	function changeText(id, text)
	{
		document.getElementById(id).innerHTML=text;
	}
	$('#recover_pass_cancel').click(function(){
		window.location='./';
	});
	$('#signup').click(function(){
		firstname = document.getElementById('firstname');
		lastname = document.getElementById('lastname');
		email = document.getElementById('email_reg');
		email_confirm = document.getElementById('email_confirm');
		password = document.getElementById('password');
		sex = document.getElementById('sex');
		birthday_month = document.getElementById('birthday_month');
		birthday_day = document.getElementById('birthday_day');
		birthday_year = document.getElementById('birthday_year');
		emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
		if(firstname.value.length<3 || !email.value.match(emailExp) || !email_confirm.value.match(emailExp) || email.value.toLowerCase()!=email_confirm.value.toLowerCase() ||  lastname.value.length<3 || sex.value==0 || birthday_month.value==0 || birthday_day.value==0 || birthday_year.value==0 || password.value.length<5)
		{
			if(firstname.value.length<3) {
				firstname.focus();
				changeText('reg_error', 'First name must be 3+ characters');
			}
			else if(lastname.value.length<3) {
				lastname.focus();
				changeText('reg_error', 'Last name must be 3+ characters');
			}
			else if(!email.value.match(emailExp)) {
				email.focus();
				changeText('reg_error', 'Must be a valid email');
			}
			else if(!email_confirm.value.match(emailExp)) {
				email_confirm.focus();
				changeText('reg_error', 'Confirm your email');
			}
			else if(email.value.toLowerCase()!=email_confirm.value.toLowerCase() || email.value=='' || email_confirm.value=='') {
				email_confirm.value='';
				email_confirm.focus();
				changeText('reg_error', 'Emails did not match');
			}
			else if(password.value.length<5) {
				password.focus();
				changeText('reg_error', 'Password must be 5+ characters');
			}
			else if(sex.value==0) {
				sex.focus();
				changeText('reg_error', 'Select your sex');
			}
			else if(birthday_month.value==0) {
				birthday_month.focus();
				changeText('reg_error', 'Select your birth month');
			}
			else if(birthday_day.value==0) {
				birthday_day.focus();
				changeText('reg_error', 'Select your birth day');
			}
			else if(birthday_year.value==0) {
				birthday_year.focus();
				changeText('reg_error', 'Select your birth year');
			}
			$('#reg_error').fadeIn(300);
			return;
		}
		else
		{
			$("#reg").submit();
			return;
		}
	});
	$('#recover_pass_cancel').click(function(){
		window.location='./';
	});
	$('#recover_pass_not_my_account').click(function(){
		window.location='./recover.php';
	});
	$('#popupClose').click(function(){
		// this is the listener
		popupReset();
	});
	function popupReset() {
		// reset the pop up window. 
		$('#popupWindow').hide(); // instead of hide, you can use effects like fade.
		$('#popupTitle').html(''); // this can be changed to a default title
		$('#popupContent').html(''); // this can be changed to a default title
		$('#popupFooter').show(); // default; show the close window button
		$('#popupClose').attr('value', 'Close'); // resets close button value
	}
	function popup(title, content, close_text, show_close) {
		// must be called through listeners
		// makes for sexy source code anyways ;)
		// 'content' will be used as functions quite often
		// show_close & close_text optional
		if(close_text==null) {
			close_text = 'Close';
		} else { 
			show_close = 1;
		}
		if(show_close==null) {
			show_close = 1;
		}
		$('#popupTitle').html(title);
		$('#popupContent').html(content);
		if(show_close==1) {
			$('#popupFooter').show();
		} else {
			$('#popupFooter').hide();
		}
		$('#popupWindow').show();
		$('#popupClose').attr('value', close_text);
	}		
	$('#why_provide_birthday').click(function() { 
		popup('Why do I need to provide my birthday?', 'Facebook requires all users to provide their real date of birth to encourage authenticity and provide only age-appropriate access to content. You will be able to hide this information from your profile if you wish, and its use is governed by the Facebook Privacy Policy.', 'Okay', 0);
	});
});