If you want to have better performance and your structure is not too complicated.
You can try Respond.JS
From the author:
This isn’t the only CSS3 Media Query polyfill script out there; but it
damn well may be the fastest.If you’re looking for more robust CSS3 Media Query support, you might
check out http://code.google.com/p/css3-mediaqueries-js/. In testing,
I’ve found that script to be noticeably slow when rendering complex
responsive designs (both in filesize and performance), but it really
does support a lot more media query features than this script. Big hat
tip to the authors! 🙂