function getCookie(name) {
    var cookieValue = "";
    var search = name + "=";
    if (document.cookie.length > 0) {
        offset = document.cookie.indexOf(search);
        if (offset != -1) {
            offset += search.length;
            end = document.cookie.indexOf(";", offset);
            if (end == -1) end = document.cookie.length;
            cookieValue = unescape(document.cookie.substring(offset, end))
        }
    }
    return cookieValue;
}   
//写入cookie
function writeCookie(name, value, hours) {
    var today = new Date();
    var expire = new Date();
    if (hours == -1) {
        var etime = getCookie("UserMoreBookExpire");
        if (etime != null) {
            expire.setTime(new Date(etime));
        } 
        else {
            expire.setTime(today.getTime() - 1000);
        }
    }
    else {
        expire.setTime(today.getTime() + 3600000 * hours);
    }
    document.cookie = name + '=' + escape(value) + ';path=/;expires=' + expire.toGMTString();

}
		        
function SetMoreBookCookie(aid) {
    var today = new Date();
    var tomorrowtime = new Date();
    tomorrowtime.setTime(today.getTime() + 3600000 * 24);
	var _value;
	var _history=getCookie("UserMoreBook");
	if(_history=="")
	{
		value=aid+"|";
		writeCookie("UserMoreBook", value, 24);
		writeCookie("UserMoreBookExpire", tomorrowtime.toGMTString(), 24);
		
	}
	else
if(_history!=_history.replace(aid+'|',''))
	{
		
	}
	else
	{
		value = _history + aid+"|";
		writeCookie("UserMoreBook",value,-1);
		
	}
}