Reload Parent (https/http)

I have a nonsecure page that calls a secure popup window to edit credit card info.
This is my popup code.

function popcc(url)
{
newwindow=window.open(url,'name','height=210,width=430');
if (window.focus) {newwindow.focus()}}

This is what I use to close the popup:

<input name="Close" type="button" id="Close" value="Close" onclick="opener.location.reload(); parent.close()">

The weird thing, is that this works when both pages are normal http. When the popup is is https it doesn't work any more. Ideas?