This jQuery function slides a container out to the right, and comes back in from the left. jsFiddle: http://jsfiddle.net/Zarlach/wxHLP/

contentSlider.js

function slideContent(ele){
	ele.animate({
		opacity: 0,
		marginLeft: '+=500'
	}, 500, function() {
		$(this).css('marginLeft', 'auto').css('marginRight', '+=500');
		$(this).animate({
			marginRight: '-=500',
			opacity:1
		}, 500, function(){
			$(this).css('marginRight', 'auto');
		});
	});
}