function fillCountries(countryFieldName) {
   jQuery(document).ready( function() {
      jQuery.getJSON("http://developer.lavalife.com/wsgeolocation/json/countries?callback=?", function(data) {
         jQuery.each(data.countries.country, function(i,c) {
            var jqOpt = new Option(c.value,c.id);
            jqOpt.innerHTML=c.value;
            jQuery("select[name='"+countryFieldName+"']").append(jqOpt);
            //jQuery("select[name='"+countryFieldName+"']").append("<option value='"+c.id+"'>"+c.value+"</option>");
         });
      });
   });
}