<!--
// cookies 设置用包

var cookies = new Object();

function extractCookies()
{
	var name, value;
	var beginning, middle, end;
	for(name in cookies)
	{
		cookies = new Object();
		break;
	}

	beginning = 0;
	while (beginning < document.cookie.length)
	{
		middle = document.cookie.indexOf('=', beginning);
		end = document.cookie.indexOf(';', beginning);
		if(end == -1)
			end = document.cookie.length;
		if((middle > end) || (middle == -1))
		{
			name = document.cookie.substring(beginning, end);
			value = "";
		}
		else
		{
			name = document.cookie.substring(beginning, middle);
			value = document.cookie.substring(middle + 1, end);
		}
		
		cookies[name] = unescape(value);
		beginning = end + 2;
	}
	
}

// 将值保存在COOKIE中
// 参数：
//     key  - 关键字
//   value  - 值
//    days  - 保存天数
function saveValueToCookies(key, value, days){
	document.cookie = "cookiesenabled=true";
    extractCookies();
    if(cookies["cookiesenabled"])
    {
      // 允许使用Cookie, 设置Cookie的有效期限
      var largeExpDate = new Date ();
      largeExpDate.setTime(largeExpDate.getTime() + (days * 24 * 3600 * 1000));
      // 将值保存至COOKIE中
      document.cookie = key + "=" + value + ";expires=" + largeExpDate.toGMTString();
    }
}

// 取得COOKIES中指定关键字的值
// 参数：
//     key  - 关键字
// 返回：取得的值
function getValueFromCookies(key){
	var values = "";
	document.cookie = "cookiesenabled=true";
    extractCookies();
    if(cookies["cookiesenabled"])
    {
       if(cookies[key])
       {
         values = cookies[key];
       }
    }
	if(values == null){
		values = "";
	}
	return values;
}
 

//-->