Simple Javascript to a parameter to all link in a page.
<script type="text/javascript">
jQuery(document).ready(function ($) {
$(function() {
$("a").attr('href', function(i, h) {
return h + (h.indexOf('?') != -1 ? "&var=value" : "?var=value");
});
});
});
</script>i use this to create demo site 🙂
You can add this simple JQuery script in footer.