Secure Connection ( SSL / HTTPS )

Currently Using: WordPress 3.0

Plugin’s attempted to use:
– HTTPS for WordPress
– Force SSL

Security Certificate: COMODO EV SSL

On my website ( https://at-riskyouth.org ) i have the main site which tons of pages and attached to our site is our store (WP E-Commerce) and within our store we have our checkout page. On our site, the ONLY page that we want secured is the checkout page, no others pages.

I went into the database and changed the GUID of the Checkout Page to “https://…” and made sure all other pages and settings say “https://…”. In the .htaccess file i have the following code:

# BEGIN Custom Code
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteCond %{REQUEST_URI} /products/checkout/
RewriteRule ^(.*)$ https://at-riskyouth.org/$1 [R,L]
</IfModule>
# END Custom Code

Basically saying if you are on a unsecured port and accessing the checkout page, redirect to a secured port.

The issue: The secured page is not secured because there are elements on that page that are originating from unsecure locations. All of the elements that i can change, have been. The only ones left are a couple from varies plugins (.js / .css files). I *could* go into the code of each plugin and change the link to https://.. instead of https://&#8230; but whenever an update is release i would have to go back and redo that change. Which becomes an extreme pain in my ass, so i really dont want to do that.

Any ideas of how to fix this? I would assume that the correct and most effecient way of doing this would be adding a bit of code to the htaccess file, but i may be wrong. Anyone know of that code or perhaps a plugin that might work?