simple geoip based links, for when you need to link to different files depending on the client’s country. requires PHP, jQuery.

in the head of the document, have this:

<script>window.geoip_data='<?php echo file_get_contents('http://freegeoip.net/json/'.$_SERVER['REMOTE_ADDR']); ?>'</script>

for the HTML links, write the default link target into the HTML, with alternatives written in for each country. here’s an example for the UK and Ireland:

<a href="/link.html" class="geo" data-link-UK="/link-uk.html" data-link-IE="ie.html">click here</a>

now in the JavaScript, process all .geo links:

$(function() {
    var country=geoip_data.country_code.substring(0,1)
    +geoip_data.country_code.substring(1,2).toLowerCase();
  $('a.geo').each(function() { 
    var $this=$(this), dataName='link'+country;
    if ($this.data(dataName)) { 
      $this.attr('href', $this.data(dataName));
    } 
  });
});

Done!