function setCookie(name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

function getCookie(name) {
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setString = null;
	var offset = 0;
	var end = 0;
	if(cookie.length > 0) {
		offset = cookie.indexOf(search);
		if(offset != -1) {
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if(end == -1) {
				end = cookie.length;
			}
			setString = unescape(cookie.substring(offset, end));
		}
	}
	return(setString);
}

function colorManage(key) {
	var nowColor=getCookie("color");
	//alert(nowColor);
	if(key=="night" || nowColor=="night") {
		if(homepage) {
			document.getElementById("switcherDay").className="switcherOff";
			document.getElementById("switcherNight").className="switcherOn";
		}
		document.getElementById("logo").src="/images/page/logo-night.gif";
		document.getElementById("logo2").src="/images/page/logo-night.gif";
		document.getElementById("night").disabled=false;
	} else {
		if(homepage) {
			document.getElementById("switcherDay").className="switcherOn";
			document.getElementById("switcherNight").className="switcherOff";
		}
		document.getElementById("logo").src="/images/page/logo-day.gif";
		document.getElementById("logo2").src="/images/page/logo-day.gif";
		document.getElementById("night").disabled=true;
	}
}