response.cookies("username")="name"
response.cookies("username").expires=Date+30

<script type="text/javascript">
//js获取cookie
var acookie=document.cookie.split("; ");
function getck(sname)
{//获取单个cookies
for(var i=0;i<acookie.length;i++){
var arr=acookie[i].split("=");
if(sname==arr[0]){
if(arr.length>1)
return unescape(arr[1]);
else
return "";
}}
return "";
}
//给相应的form里的input赋值
document.form_name.input_name.value=getck("username");
</script>