$(document).ready(startLoadRandomBanner);

function startLoadRandomBanner() {
		setTimeout(loadRandomBanner,8000);
}

function loadRandomBanner () {
	var load = 1;
	if (load) {
		id = $('#banner_id')[0].value;
		var url = '/ajax/banner.php?id=' + id;
		$('#banner').load(url);
		startLoadRandomBanner();
	}
}