function setCookie(name, value){
	var expdate = new Date();
	expdate.setHours(expdate.getHours() + 9999);
	document.cookie = name + '=' + value + '; expires=' + expdate.toGMTString() + '; path=/';
}
function getCookie(variable){
	var cookieValue = document.cookie;
	var cookieStartsAt = cookieValue.indexOf(" " + variable + "=");
	if (cookieStartsAt == -1) {
		cookieStartsAt = cookieValue.indexOf(variable + "=");
	}
	if (cookieStartsAt == -1) {
		cookieValue = null;
	}
	else {
		cookieStartsAt = cookieValue.indexOf("=", cookieStartsAt) + 1;
		var cookieEndsAt = cookieValue.indexOf(";", cookieStartsAt);
		if (cookieEndsAt == -1) {
			cookieEndsAt = cookieValue.length;
		}
		cookieValue = unescape(cookieValue.substring(cookieStartsAt, cookieEndsAt));
	}
	return cookieValue;
}
function switchLow() {
		setCookie("bw", "low");
		window.location.reload();
}
function switchHigh() {
		setCookie("bw", "high");
		window.location.reload();
}