back button retaining filters

I am using Nop-Templates Ajax Filters.  I am asking if I can assign a BACK button, not a category link.
Example being  -   I select some filters, click on a few add to product compare buttons, then goto Compare products.  If I click the browser Back button, it will take me back to last page I was on WITH filters still selected.

Is there a way to add a button that does the same as the BACK button.  If I have a button that routes to a category product page, it clears the filters.

I have some users that don't know what/where the back button does.  I need to emulate it.

I created a widget zone, and used Nop-Templates HTML widgets & java button checked with this code.
<form>
<input type="button" value="Go back!" onclick="history.back()">
</form>

Info from this page - https://www.computerhope.com/issues/ch000317.htm