$(function() {

	//cache the window object
	var $window = $(window);

	//Parallax background effect
	$('section[data-type="background"]').each(function() {
		var $bgobj = $(this); // assiging the object

		$(window).scroll(function() {
			//scroll the background at var speed
			//the ypos is a negative value because we're scrolling it up
			var yPos= -($window.scrollTop() / $bgobj.data('speed'));

			//put together our final background position
			var coords = '50% '+ yPos + 'px' ;

			//move the background
			$bgobj.css({backgroundPosition: coords});

		});// end window scroll

	});


});

var amountScrolled = 300;

$(window).scroll(function() {
	if ( $(window).scrollTop() > amountScrolled ) {
		$('a.back-to-top').fadeIn('slow');
	} else {
		$('a.back-to-top').fadeOut('slow');
	}
});

$('a.back-to-top').click(function() {
	$('html, body').animate({
		scrollTop: 0
	}, 700);
	return false;
});