This scrolls the background images behind modules or any other element you set it to.

CSS

#content-container {
	background: url(/images/kb/2016/742/workplace.jpg) center center fixed;
	background-size: 100% auto;
}

/* Optional and is just for this demo */
#content-container {
	padding: 10px;
}
#content-container p {		
	color: #999;
	font-size: 25px;
}

JS

setTimeout(function() {
(function($) {
	
//----------------------------------------

/* Parallax Scrolling */
$(document).ready( function() 
	{
		
		// Manually adding settings to an element
		//$('#content-container').attr('data-type', 'background');
		//$('#content-container').attr('data-speed', '3');
		
		// Rules based adding settings to an element
		if ($( "#content-container" ).hasClass( "parallax-background" ))
		{
			$('#jsn-content-top-below').attr('data-type', 'background');
			$('#jsn-content-top-below').attr('data-speed', '3');
		}
		
		/* Trigger the Parallax Scrolling */
		$('div[data-type="background"]').each(function(){
			var $bgobj = $(this); // assigning the object
		 
			$window = $(window);
			$(window).scroll(function() {
				var yPos = -($window.scrollTop() / $bgobj.data('speed')); 
				 
				// Put together our final background position
				var coords = '50% '+ yPos + 'px';
	 
				// Move the background
				$bgobj.css({ backgroundPosition: coords });
			}); 
		});

	});	
	
//----------------------------------------	

})(jQuery);
}, 0);

HTML

<div id="content-container" class="parallax-background">
	<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer</p>
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	<p>of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
</div>