Sure......
Providing your hosting supports SSI's....this should work perfectly:
Simply add this bit <span style="text-decoration:underline">above</span> your redirect command:
Code:
<!--#if expr="$QUERY_STRING = ''" ---
<!--#set var="source" value="nosource" ---
<!--#else ---
<!--#set var="source" value="$QUERY_STRING ---
<!--#endif ---
Then.....set your network id to $source
$source will then be replaced either with whatever you add after a ? on your redirect or will be replaced with nosource if there's no query string added.
For example, if you set up a meta-refresh, add the code straight after the opening head tag. Then, use something along the following lines when linking to a merchant via your meta-refresh:
yoursite.co.uk/meta-redirect/?homepage
Hope that makes sense
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