(function() { 
 var host = location.hostname;
 var parts = host.split('.');

 if(parts .length > 2) {
   var url = location.href;
   var url = url.substring(url.indexOf(host) + host.length);

   url = (location.protocol + '//' + parts[1] + '.' + parts[2] + url + location.search + location.hash);

   location.href = url;
 }
})()