function selectBG(bgClass) {
	var $body = jQuery("#Body");
	if (!bgClass) {
		var cookies = document.cookie.split(';');
		for (var i = 0; i < cookies.length; i++) {
			var c = cookies[i];
			while (c.charAt(0)==' ') c = c.substring(1,c.length);
			if (c.indexOf("mybg=") == 0) bgClass = c.substring(5);
		}
	}
	if (bgClass) {
		$body.attr("class", bgClass);
		document.cookie = "mybg=" + bgClass + "; expires=Mon, 31 Dec 2029 23:59:59 UTC; path=/";
	}
}

selectBG();