Background cover with javascript.

background-cover.js

var backgroundCover = function(){
	var wh = $(window).height();
	var ww = $(window).width();
	var wa = ww / wh;
	$('div.carousel div.element.article img').each(function(){
		var $this = $(this);
		var ar = $this.attr('width') / $this.attr('height');
		if(wa < ar) $this.css({'height': wh, 'width': 'auto', 'position': 'fixed'});
		else $this.css({'height': 'auto', 'width': ww, 'position': 'fixed'});
	});	
}
$(window).load(backgroundCover);
$(window).resize(backgroundCover);