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Try:
<html>
<head>
<script language="JavaScript"><!--
function Get_Cookie(name) {
var start = document.cookie.indexOf(name+"=");
var len = start+name.length+1;
if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
if (start == -1) return null;
var end = document.cookie.indexOf(";",len);
if (end == -1) end = document.cookie.length;
return unescape(document.cookie.substring(len,end));
}
function Set_Cookie(name,value,expires,path,domain,secure) {
document.cookie = name + "=" +escape(value) +
( (expires) ? ";expires=" + expires.toGMTString() : "") +
( (path) ? ";path=" + path : "") +
( (domain) ? ";domain=" + domain : "") +
( (secure) ? ";secure" : "");
}
var today = new Date();
var expires = new Date(today.getTime() + (56 * 86400000));
function set() {
if (document.logonForm.elements[1].checked)
Set_Cookie("userid",document.logonForm.userid.value,expires);
if (document.logonForm.elements[3].checked)
Set_Cookie("password",document.logonForm.password.value,expires);
}
function get() {
userid = Get_Cookie("userid")
if (userid != null) {
document.logonForm.userid.value = userid;
document.logonForm.elements[1].checked = true;
}
password = Get_Cookie("password")
if (password != null) {
document.logonForm.password.value = password;
document.logonForm.elements[3].checked = true;
}
}
//--></script>
</head>
<body onLoad="get()">
<form name="logonForm" onSubmit="return set();">
<p>Userid: <input type="input" name="userid"> Save <input type="checkbox">
<p>Password: <input type="password" name="password"> Save <input type="checkbox">
<p><input type="reset"> <input type="submit">
</form>
</body>
</html>