Problem
Sometimes there is an audit requirement, to let customers know a link is off your site and therefore you take no further responsibility for it. For example, a reference to an external associate site.
Solution
I’ve just used some simple javascript code, which is triggered by the click (onclick event). This pops up a warning, which can be accepted or rejected. Accepting goes to the desired site, whilst reject just aborts.
Example
Or you can see it in its own page here:
Here is the source code of the link:
<script>function Terms() { popup=window.open('/common/demoP/popup.html','windowName','width=500,height=300'); if (!popup.opener) popup.opener = self;}</script>Hi there - below you'll see a link to www.securityfocus.com. When you click it, a popup will appear that you need to accept to follow the link.
<a href="#" onClick="Terms()">www.securityfocus.com
Here is the source of the popup:
<script>function supressError() { return true; }function load(url) { window.onerror = supressError; opener.location.href = url;}</script>Warning you are about to leave my cool site,
only click 'Leave' if you absolutely want too!<form><input type=submit value="Don't Leave!" onClick="javascript:self.close()"><input type=submit value="Leave" onClick="javascript:load('http://www.securityfocus.com');self.close()"></form>