[mokujin]

Hi, I have this function, how can I add CSRF for this:

function tab(URL) {
  http.open("GET", "tabs.php?f="+URL+"&s="+Math.random(), true);
  http.onreadystatechange=function() {
    if(http.readyState == 4) {
      document.getElementById('forumbits').innerHTML = http.responseText;
	}
  }
  http.send(null);
}

Thanks for helping me