Setting a 20 minute expiration on a cfcookie

I see from the documentation for cfcookie that the expration can be set via the Expires field:

http://livedocs.adobe.com/coldfusion/6.1/htmldocs/tags-a18.htm

It pretty self explanatory if I want the cookie to remain for a few days, but when it comes to a few mintues how do I go about that?

Specifically I want to set a cookie to expire in 20 minutes and I would like the sample code to do that.
onaled777Asked:
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ZvonkoConnect With a Mentor Systems architectCommented:
Check this:
<cfcookie name = "ExpireTimeDemo"
   value = "#TimeFormat(DateAdd("n",20,NOW()))#"
   expires = "#DateAdd("n",20,NOW())#"> 
 
<script>
alert(unescape(document.cookie));
</script>

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