<html>
<head>
<title>温馨提醒</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<script>
var alertmessage="你是猪，哈哈哈"
var once_per_session=1
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) { // if cookie exists
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}
function alertornot(){
if (get_cookie('alerted')==''){
loadalert()
document.cookie="alerted=yes"
}
}
function loadalert(){
alert(alertmessage)
}
if (once_per_session==0)
loadalert()
else
alertornot()
</script>
</body>
</html>