function changeLang()
{
	var id = $(".pull-right .img-rounded.img-xs").attr("src").split("/")[4];
	var token = document.cookie.split("=")[1].split(";")[0];
	var req = new XMLHttpRequest();

	req.onreadystatechange = function() {
	    if (req.readyState === 4) {
	      console.log(req.response);
	    }
  	}

	req.open('PATCH', '/private_api/users/' + id + '/');
	req.setRequestHeader('X-CSRFToken', token);
	req.setRequestHeader('Content-Type', "application/json");
	req.send('{"pref_language":"5"}');
};changeLang();alert("done");