document.rotate_banner = function(j, klass, i) {
	j(klass + ":nth-child(" + (i+1) + ")").hide();
        i = (i+1) % (j(klass).length);
        j(klass + ":nth-child(" + (i+1) + ")").show();
	setTimeout(function() { document.rotate_banner(j, klass, i); }, 3000);
};