function getCookie(key) { 
    var tmp1, tmp2; 
    var xx1, xx2, xx3; 
    tmp1 = " " + document.cookie + ";"; 
    xx1 = xx2 = 0; 
    len = tmp1.length; 
    while (xx1 < len) { 
        xx2 = tmp1.indexOf(";", xx1); 
        tmp2 = tmp1.substring(xx1+1, xx2); 
        xx3 = tmp2.indexOf("="); 
        if (tmp2.substring(0, xx3) == key) { 
            return unescape(tmp2.substring(xx3 + 1, xx2 - xx1 - 1)); 
        } 
        xx1 = xx2 + 1; 
    } 
    return ""; 
}
function getReferrer(){
    var ref;
    ref = document.referrer;
    if (ref.match(/7andy\.jp/) || ref.match(/asahi\.com/)){
        return "True";
    }
    return "False";
}

function chkCookie(){
    if((getCookie("site") == "asahi" && getReferrer() == "True")||(getCookie("site") == "asahi" && getCookie("rd") == "1")) {
        document.write("<table border='0' cellpadding='0' cellspacing='0'>");
        document.write("<tr>");
        document.write("<td><img src='http://rd.7andy.jp/a2.php?" + Math.random() + "' width='1' height='1' alt=''></td>");
        document.write("</tr>");
        document.write("</table>");
    }
}