I have been doing some browser testing and found some errors that pop up in IE8 and some older versions of IE. These are the messages and snippets of code that they come from (I found them using DebugBar).
<script type="text/javascript" id="ga">var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");//document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));var tag = document.createElement("script");tag.setAttribute("src", gaJsHost + "google-analytics.com/ga.js");tag.setAttribute("type", 'text/javascript');document.getElementById("ga").insertBefore(tag, document.getElementById("ga-script"));</script>
<script type="text/javascript" id="ga-script">var pageTracker = _gat._getTracker("UA-2718724-5");window.google_analytics_uacct = "UA-2718724-5";pageTracker._trackPageview();</script>
<script type="text/javascript" id="ga-script">var pageTracker = _gat._getTracker("UA-2718724-5");window.google_analytics_uacct = "UA-2718724-5";pageTracker._trackPageview();</script>
<script type="text/javascript" id="piwik">var pkBaseURL = (("https:" == document.location.protocol) ? "https://stats.cihar.com/" : "http://stats.cihar.com/");//document.write(unescape("%3Cscript src='" + pkBaseURL + "piwik.js' type='text/javascript'%3E%3C/script%3E"));var tag = document.createElement("script");tag.setAttribute("src", pkBaseURL + "piwik.js");tag.setAttribute("type", 'text/javascript');document.getElementById("piwik").insertBefore(tag, document.getElementById("piwik-script"));</script>