// de timeout die je nodig hebt	
		var banner_delay = 5000;
		var banner_path = "/wp-content/uploads/2010/08/";
		var banner_img = ["ibc-banner-homepage.jpg"];
		var banner_nr = 0;
	
		function swapBanner()
		{
			banner_nr++;
			$("#banner_img").attr('src', banner_path + banner_img[banner_nr % banner_img.length]);
		}
		
		jQuery(document).ready(function($) {
			setTimeout(swapBanner, banner_delay, true);
		});