The url to my site is [snipped].
There are a few sub pages on my site, (called "features", "benefits", and "read more".) I wanted to know how to make the button on the bottom of these pages that says "home" link to the previous page, instead of linking to the home page (index).
If anyone can help, I'd greatly appreciate it.
Thank you!

<input type=button value="Back" onClick="history.go(-1)">

<?php if (isset($_SERVER['HTTP_REFERER'])) { echo "<a href='$_SERVER['HTTP_REFERER']'>back</a>"; } else { echo "<a href='javascript:history.go(-1)'>back</a>"; }?>