/*[Read Cookie]*/
function get_cookie(name)
{
	cookie_name = name + '=';
	cookie_length = document.cookie.length;
	cookie_begin = 0;
	while (cookie_begin < cookie_length)
	{
		value_begin = cookie_begin + cookie_name.length;
		cookie_name_by_document = document.cookie.substring(cookie_begin, value_begin);

		if (cookie_name_by_document == cookie_name)
		{
			var value_end = document.cookie.indexOf (';', value_begin);

			if (value_end == -1)
			{
				value_end = cookie_length;
			}

			return document.cookie.substring(value_begin, value_end);
		}

		cookie_begin = document.cookie.indexOf(' ', cookie_begin) + 1;

		if (cookie_begin == 0)
		{
			break;
		}
	}

	return null;
}

/*[Set Cookie]*/
function setCookie(c_name,value,expiredays)
{
	var exdate=new Date();

	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ '=' +value+
//	document.cookie=c_name+ '=' +escape(value)+
((expiredays==null) ? '' : ';expires='+exdate.toGMTString());
}