Totally bizarre – top part of all pages dim after loading

ETA: It turns out the problem is caused by the Google Analytics plugin, just in case anyone else is having the same problem. (And if you have a solution other than disabling it, please let me know!)

LKL

I have three blogs, and out of the blue two of them are experiencing what can only be described as a “dimming” or “fading” problem in FireFox, where they finish loading and then the top part of the page dims, as if a semi-transparent sheet of white is placed over them. Not only that, but the links within the dimmed section all become unclickable. At a random point on the page, the blog displays in undimmed colors and with clickable links.

I’ve checked through all the theme files for anything bizarre, tried disabling plugins, and even removed images, but it’s still happening. They’re fine in IE6, but dim in FF. Any ideas?

https://www.lklawless.com/blog
https://www.lklawless.com/chickliterate