Attach a query string to the links on the page

attach_query_string.js

$('a').each(function() {
  if (location.search.substr(1) !== '') {
    query = location.search.substr(1);
    symbol = $(this).attr('href').indexOf("?") == -1 ? '?' : '&';
    $(this).attr('href', $(this).attr('href') + symbol + query);
  }
});