Security error attempting to access iframe contentDocument

[aboone]

There appears to be an issue on this line:

sheerid-magento/app/code/SheerID/Verify/Block/Script.php

Line 49 in d8d8953

if (this.contentDocument && this.contentDocument.location.href.indexOf("<?php echo Mage::getUrl('SheerID/verify/dismiss'); ?>") == 0) {

The iframe load event is firing when a SheerID URL is loaded, and will always throw a cross-origin security error when attempting to read the contentDocument. We should trap and ignore the exception since we only care if the URL matches a particular dismissal URL.