Not working in IE 7 or 8

I have 7.x-1.0 installed, and it works wonders on all browsers, except IE 7 and 8.
On IE8, it shows the dark menu bar with 'hamburger' symbol all the time, even on desktop display.

It seems like the js responsive for small screens is triggered no matter what size the screen on IE8. Same thing on IE 7, but on 7 there isn't even a dark menu bar with 'hamburger' symbol. So it looks like there is nothing there. In the code the nav is there, but it is open and 100% wide, hidden under the image.

IE 9 and up works perfectly:

Is there something I am doing wrong, that it doesn't work on those browsers? Can I disable this module for just IE7 and 8? Any help would be appreciated. Thanks!