Session Data/gwProxy automatically added to posts & pages

From what I’ve researched, the extra gwProxy and jsProxy hidden code that is automatically being added to all posts and pages has to do with the FireFox plugin, Browser Highlighter. However, I do not (nor my client) have this plugin installed. Anyone know another reason why this code is appearing, and how I can easily remove and prevent from happening?

Also – the site is running extremely slow. I think this code is what is slowing it down, but I’m not 100% sure. Would like to fix this to see if it speeds up the site. I do have WP-Total-Cache installed. riverdreamsintuition.com

<input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" /> <input id="gwProxy" type="hidden" /> <input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" />

<input id="gwProxy" type="hidden" /><input id="jsProxy" onclick="if(typeof(jsCall)=='function'){jsCall();}else{setTimeout('jsCall()',500);}" type="hidden" />