Not sure that's really relevant here, though it probably adversely affects being able to test the page... but regardless, page still isn't all that helpful to QA w/out the joomla stuff on it.
Also, you said it's not spitting out any js errors...what are you looking at to see if there are js errors? I see the following error:
You are attempting to look for an element with an id attribute of 'card_template' here:
var cardTemplate = document.getElementById('card_template').value;
However, when I look at the source of the page, I see nothing with that id. What I do see is the following:
<select name="card_template" class="card_template" onchange="gamercardGenerator.update()">
You need to either add an id attrib there or target it a different way.
I tried to upload the code from your 2nd link and test it, but there were too many errors to wade through to bother. Too much stuff on the page dependent on other stuff on your site that isn't being loaded for whatever reason. Maybe required stuff output server-side, relative links, etc... but I did happen to see the same error listed above.
I'm afraid that's about all I can really do unless you can provide a link to a live page on your site, with your code and the joomla stuff on it.
MAN! I LOVE YOU!!!!! You've fixed it. You got to love those basic errors that mess everything up.
I would love to donate to you, but I am 16, and i'm poor.
Also, if I may ask, how were you getting those errors being reported and I wasn't? Is there a something I have to enable for those errors?