document.location / parent.location - Can they be blocked?
<p>I am using the above 2 commands on my website. It seems they work for 95% of people visiting the page it should trigger but for others it doesn't.</p>

<p>Does anyone know if these javascript commands can be blocked at all? I am having a real headache finding out why they don't work sometimes.</p>

<p>p.s I am not using these for spam or anything, just for processing payments.</p>

<p>Thanks.</p>

<p>EDIT: I have a  tag replacement for JS being disabled. I am thinking more of a random blocking that a user isn't generally aware of. None of the people who have reported the issue would be likely to install a pop up blocker</p>
