If you're able to inject your own JavaScript you might be able to inject the X-UA-Compatible
meta tag.
This code will inject the meta tag and force IE to run in edge mode, which means IE will treat it as standards mode:
var meta = document.createElement('meta');
meta.setAttribute('http-equiv', 'x-ua-compatible');
meta.setAttribute('content', 'IE=edge');
document.getElementsByTagName('head')[0].appendChild(meta);