Footer not rendering correctly in IE after inserting javascript

Hello,
I’m using a slightly modified fasttrack theme and I’ve been looking for a simple fading marquee script to insert just below my header. I found one at: https://javascript.internet.com/text-effects/fading-marquee.html

I inserted the marquee.js script in my themes home.php file just after the last meta tag as follows:
<script type=”text/javascript” src=”/wp-content/marquee.js”></script>

I then call it from a div just below the div containing id=content as follows:
<div class=”news_head”></script></div>

This setup works correctly in Firefox, but in IE, the footer is incorrectly rendered and its contents appear as the bottom element in the sidebar.

I thought perhaps it might be a width issue or how the ‘a’ tag is defined in my style.css. I’ve replaced ‘a’ with a span tag but the effect is the same.

Any suggestions as to why IE isn’t rendering this correctly?

The site is: https://www.brownsauce.org.

Thanks in advance, Brad