Opening new page/tab for link in Google Calendar feed

In my Google Cal Events, I am trying to have it open a new tab or page when the user clicks on the [description] field (which contains a link). I can't seem to get this working. Here's what I have:

[if-description]
<div>[link newwindow="true"]Description: [description] [/link] </div>
[/if-description]

It just doesn't work. Can you help?