$(document).ready(function() { 
	var curImage = 0;
	var images = $('.left-col img');

	if (images.size()) {
		setInterval(function() {
			curImage++;
			if (curImage >= images.size()) {
				curImage = 0;
			}
			var img = $(images.get(curImage));
			img.siblings().fadeOut();
			img.fadeIn();
		}, 5000);	
	}
});