function email_addr(name,host,isLink,otherName) {
        var email = strrev(name) + "@" + strrev(host);
        var linktext = email;   // text to display within link
        if (otherName) {
            linktext = otherName;
            isLink = 1;  // only makes sense for live link
        }
        if ( isLink ) document.write("<a href=\"mailto:" + email + "\">");
        document.write(linktext);
        if ( isLink ) document.write("</a>");
        document.close();
    }

    function strrev(str) {
       if (!str) return '';
       var revstr='';
       for (i = str.length-1; i>=0; i--)
           revstr+=str.charAt(i)
       return revstr;
    }