Alright, This code works in every browser except IE (again, to be expected). The code is supposed to refresh based on setInterval, and does so normally in all other browsers except IE, which just doesn't refresh. Can you spot the problem?

var nick = document.getElementById("chatnick").value;
var sessid = document.getElementById("sessid").value;
var room = document.getElementById("roomid").value;
function user_read() {
  $.ajax({
 type: "GET",
 url: "methods.php",
 data: {method: "u", room: room},
 dataType: "html",
 success: function (data, status, xhr) {
     $("#userwindow").html(data);
     setTimeout(user_read, 10000);
 }
});
}
function ajax_read() {
$.ajax({
 type: "GET",
 url: "methods.php",
 data: {method: "r", room: room},
 dataType: "html",
 success: function (data, status, xhr) {
     $("#chatwindow").html(data);
     setTimeout(ajax_read, 400);
 }
});
}
function submit_msg() {
var msg = document.getElementById("chatmsg").value;
$.ajax({
    type: "GET",
    url: "methods.php",
    data: {method: "w", room: room, m: msg, n: nick, sessid: sessid},
    dataType: "html",
    success: function (data, status, xhr) {
    }
});
document.getElementById("chatmsg").value = "";
}
function keyup(arg1) { 
if (arg1 == 13) submit_msg(); 
}
setTimeout(function(){ajax_read();}, 400);
user_read();