//##################################################################
//  クッキー読み書き削除関数
//  (C) Copyright Shogi Club 24 Ltd. 2002 All rights reserved.
//##################################################################

function getCookie(key) {
	tmp=document.cookie+";";
	tmp1=tmp.indexOf(key,0);
	if(tmp1!=-1){
		tmp=tmp.substring(tmp1,tmp.length);
		start=tmp.indexOf("=",0)+1;
		end=tmp.indexOf(";",start);
		if(start==end)
			return("");
		return(unescape(tmp.substring(start,end)));
	}
	return("");
}

function setCookie(key,val){
	tmp = key+"="+escape(val)+"; ";
	expireDate = new Date();
	expireDate.setTime(expireDate.getTime()+1000*60*60*24*30);
	tmp += "expires="+expireDate.toGMTString()+"; ";
	document.cookie = tmp;
}

function deleteCookie(key){
	if(document.cookie != "") {
		tmp = key+"=; ";
		expireDate = new Date();
		expireDate.setYear(expireDate.getYear()-1);
		tmp += "expires="+expireDate.toGMTString()+"; ";
		document.cookie = tmp;
	}
}