Authorize.net SIM v1.3.9h Secure/Non-Secure content error

Hello, I recently switched from PayPal to Authorize.net for credit card payments on my site. I do not have SSL configured on my site so I am using the SIM plugin.

If a card is declined I am having problems in both IE and Chrome (haven't tried FF) where http links on the relayed page are being blocked so I'm loosing my CSS styles and JS includes. It appears as though this is happening because of how authorize.net handles declined cards. They post back to their site where they serve my payment page so the URL remains HTTPS (http://secure.authorize.net/gateway/transact.dll).

Here is an example error of one of the blocked CSS files in chrome:

[blocked] The page at https://secure.authorize.net/gateway/transact.dll ran insecure content from http://www.mysite.com/includes/templates/mytemplate/css/stylesheet.css.

I searched and found a post where someone else was experiencing this but there was no resolution. Anyone have any ideas how this can be fixed? I'd really rather not put out the money for SSL.

Thanks,
Kevin

I'd really rather not put out the money for SSL
An SSL Certificate can be had for about $16USD per year