This JavaScript uses JQuery (which our CMS provider includes on every page anyway). It checks to see if the error page exists in an iframe (top != self), and then it grabs the raw html for every html element on the parent page that should contain an ad.
That data is wrapped into an object, and posted to a simple php script that would write a log of every value posted to it to a file.
In the end, I received a log file with a high likelihood that the offending ad code was within. I was able to do a quick grep on the file and discovered the ad with an iframe pointing toward "/eyeblaster/addineyev2.html"
I hope this helps someone else out there!
have found my own answer, and I'll share it here for the rare event another Web Developer is trying in vain to pinpoint an ad doing this same thing to them.
The offending digital ad was coming in with an iframe that was pointed toward "/eyeblaster/addineyev2.html" I used this knowledge, and coded the following javascript to gather information about the page that contained the iframe (ie the page with the ad on it).
if(top != self) {
$.post("/ad_diagnose/log.php", {
a: $('#ad-div-one', top.document).html(),
b: $('#ad-div-two', top.document).html(),
c: $('#ad-div-three', top.document).html(),
d: $('#ad-div-four', top.document).html(),
e: $('#ad-div-five', top.document).html(),
basickly poo coders using iframes adds
website has basicly been iframed through a flash code, use a iframe breaker code