A method for serving .svg images with a fallback for lte IE8
<!--[if lte IE 8]>
<a href="..."><img src="your/file.png" alt="Your alt text" ></a>
<![endif]-->
<!--[if gt IE 8]>
<a href="..."><img src="your/file.svg" alt="Your alt text" ></a>
<![endif]-->
<!--[if !IE]> -->
<a href="..."><img src="your/file.svg" alt="Your alt text" ></a>
<!-- <![endif]-->