$(document).ready(function() { 

	$('.btn-submit').click(function(e){
	
		// Declare the function variables:
		// Parent form, form URL, email regex and the error HTML
		var $formId = $(this).parents('form');
		var formAction = $formId.attr('action');
		var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
		var $error = $('<span class="error"></span>');

		// Prepare the form for validation - remove previous errors
		$('li',$formId).removeClass('error');
		$('span.error').remove();

		// Validate all inputs with the class "required"
		$('.required',$formId).each(function(){
			var inputVal = $(this).val();
			var $parentTag = $(this).parent();
			if(inputVal == ''){
				$parentTag.addClass('error').append($error.clone().text('Required'));
			}
			
			// Run the email validation using the regex for those input items also having class "email"
			if($(this).hasClass('email') == true){
				if(!emailReg.test(inputVal)){
					$parentTag.addClass('error').append($error.clone().text('Enter valid email'));
				}
			}
			
			// Check passwords match for inputs with class "password"
			if($(this).hasClass('password') == true){
				var password1 = $('#password-1').val();
				var password2 = $('#password-2').val();
				if(password1 != password2){
				$parentTag.addClass('error').append($error.clone().text('Passwords must match'));
				}
			}
		});

		// All validation complete - Check if any errors exist
		// If has errors
		if ($('span.error').length > 0) {
			
			$('span.error').each(function(){
				
				// Set the distance for the error animation
				var distance = 5;
				
				// Get the error dimensions
				var width = $(this).outerWidth()-120;
				
				// Calculate starting position
				var start = width + distance;
				
				// Set the initial CSS
				$(this).show().css({
					display: 'block',
					opacity: 0,
					right: -start+'px'
				})
				// Animate the error message
				.animate({
					right: -width+'px',
					opacity: 1
				}, 'slow');
				
			});
		} else {
			$formId.submit();
		}
		// Prevent form submission
			e.preventDefault();
	});
	
	// Fade out error message when input field gains focus
	$('.required').focus(function(){
		var $parent = $(this).parent();
		$parent.removeClass('error');
		$('span.error',$parent).fadeOut();
	});
});