[Light Speed]

It works!

Here is the code:
in cart.php

Change this in the redirect section:

		if(!empty($HTTP_REFERER)) {
			func_header_location($HTTP_REFERER);


to this:
		if(!empty($HTTP_REFERER)) {
	func_header_location($HTTP_REFERER.'$page&addedtocart=1');

In customer/product.tpl
I added this code from Jon after the add to cart button code:

{if $smarty.get.addedtocart eq "1"} 
Product has been added to cart 
{/if}

I just use text but it could have been a language var like

{if $smarty.get.addedtocart eq "1"} 
{$lng.txt_product_added_announ}
{/if}

and added that var in the language area of the cart admin.