function address( arg ) {
    try {
        var code = arg.toUpperCase();
        var fac = code.charCodeAt(0)-38;
        var ret = "";
        for( i=1; i<arg.length; i++ )
            ret += String.fromCharCode( ((fac*(code.charCodeAt(i)-38))%53)+44 );
        return( ret.toLowerCase() );
    }
    catch ( err ) {
        txt  = "There was an error on this page.\n";
        txt += "Error description: " + err.description + "\n";
        txt += "Click OK to continue.\n";
    }
}