Add a blackslash to HTMl view

I have a path that appears at the top of our HTML dashboard page that references a folder in our directory structure. This is so I can easily cut and paste the link into my computer and used apps and I jump right to the folder I need. However when I try to enter in the html z:\print_jobs\ <%=order.Order_Number%> or the deluge script <%="z:\print_jobs\ + order.Order_Number%> the backslash throws an error. Any ideas?

Thanks.