一、在页面中添加如下的代码：

<script language=″javascript″>
<!－－
var username = getcookie(′username′);
if (username == null) {
username = prompt(′please enter your name (otherwise press cancel)′,″″);
if (username == null) {
alert(′its ok if you dont want to tell me your name′);
username = ′websurfer′;
} else {
// don′t set the username cookie.... because the user refused to tell you.
// they will be prompted next time....
pathname = location.pathname;
mydomain = pathname.substring(0,pathname.lastindexof(′/′)) ＋′/′;
// set expiry date to 1 year from now.
var largeexpdate = new date ();
largeexpdate.settime(largeexpdate.gettime()＋(365＊24＊3600＊1000));
setcookie(′username′,username,largeexpdate,mydomain); } }
function getcookieval (offset) {
var endstr = documents.cookie.indexof (″;″, offset);
if (endstr == －1)
endstr = documents.cookie.length;
return unescape(documents.cookie.substring(offset, endstr)); }
function getcookie (name) {
var arg = name ＋ ″=″;
var alen = arg.length;
var clen = documents.cookie.length;
var i = 0;
while (i < clen) {
var j = i ＋ alen;
if (documents.cookie.substring(i, j)==arg)
return getcookieval (j);
i = documents.cookie.indexof(″ ″, i) ＋ 1;
if (i == 0)
break;

} return null; }

function setcookie (name, value) {

var argv = setcookie.arguments;

var argc = setcookie.arguments.length;

var expires = (argc > 2) ? argv[2] : null;

var path = (argc > 3) ? argv[3] : null;

var domain = (argc > 4) ? argv[4] : null;

var secure = (argc > 5) ? argv[5] : false;

documents.cookie = name ＋ ″=″ ＋ escape (value)＋((expires == null) ? ″″ : (″; expires=″＋expires.togmtstring()))＋((path == null) ? ″″ : (″; path=″ ＋ path))＋((domain == null) ? ″″ : (″; domain=″ ＋ domain))＋((secure == true) ? ″; secure″ : ″″);

}

document.write(′<p>谢谢您的光临, ′＋username);

//－－></script>