iFrame block content and Javascript content work in IE but not Chrome & FF??

I am trying to integrate Facebook and Twitter in blocks in my site (I am aware of some of the modules, not all are in production for Drupal7).

The problem that I am having is that everything seems to work just fine in IE, but not on Chrome or Firefox (and that is sure backwards for most of the times I run into this kind of thing).

In both cases I am using code in a Block, the code was provided by FB/Twitter:
For Facebook I am using an iframe.
For Twitter I am using drupal_add_js()

In IE both display fine and as intended.
In Chrome and FF the iframe space is loaded on the screen, but there is no content, and the button and counter do not appear for the Twitter link (only the text link).

I have tried this in different themes, and in different sections of the page.

The website where I am testing this is http://t.harmonytribe.org. I am running Drupal7.

Any thoughts?
Thanks.