function setCookie(name, value)
{
	document.cookie = name + '=' + escape(value) + '; path=/';

}
function getCookie(name)
{
    var cookie = document.cookie;

    if(cookie && cookie.length > 0)
    {
        var offset = cookie.indexOf(name + '=');
        var end;
        if(offset != -1)
        {
            offset += name.length + 1;
            end     = cookie.indexOf(';',offset);
            if(end == -1)
            {
                end = cookie.length;
            }
            return unescape(cookie.substring(offset,end));
        }
    }
    return "";
}

function deleteCookie() {
  cName = "pageview"; // 削除するクッキー名
  dTime = new Date();
  dTime.setYear(dTime.getYear() - 1);
  document.cookie = cName + ";expires=" + dTime.toGMTString();
}