[minorgod]

Disregard my previous method. It causes problems if you have hardcoded links that add products directly to your cart without going through the storefront. I have set up a different method that requires no modification to the skinswap mod itself. Instead modify your /customer/auth.php file by adding the following lines somewhere...it doesn't really matter where...

//skin swap mod modification by brett
//first we register an x-cart session variable to hold the skinswap status
//then we see if the customer has submitted a variable that triggers the skin swapping

x_session_register('do_skinswap');
if(!empty($_GET[$value_to_swap_with])){
	if(!empty($skinswap) && !empty($default_skin) && $skinswap != $default_skin){
		$do_skinswap="true";
	}
}
//now that we've set the variable that determines if we should swap skins or not
//we check to see if it is empty (meaning it contains no string at all) which would
//indicate that it has not yet been set. If it hasn't been set, we set the variable equal
//to the string "false", expire the existing skinswap cookie that causes the swapping,
//then redirect to wherever the user was. This should kill the skin swapping when the 
//page reloads

if(empty($do_skinswap)){
	$do_skinswap="false";
	setcookie ("skinswap", $default_skin, time()-31536000);
	header("Location: $_SERVER[PHP_SELF]?$_SERVER[QUERY_STRING]");
}

The purpose of this mod is to keep the customer from being locked into the same skin each time they return to your store under a different session. With my modification, the skin swapping will stop if a user closes their browser window and revisits your site without going through your specific skinswap URLs. Enjoy.