diff --git a/butterfly/static/coffees/main.coffee b/butterfly/static/coffees/main.coffee
index 5db4923..8f626d4 100644
--- a/butterfly/static/coffees/main.coffee
+++ b/butterfly/static/coffees/main.coffee
@@ -36,7 +36,11 @@ ws.onopen = ->
 
 
 ws.onerror = -> console.log "WebSocket error", arguments
-ws.onmessage = (e) -> term.write e.data
+ws.onmessage = (e) ->
+    setTimeout ->
+        term.write e.data
+    , 1
+
 
 ws.onclose = ->
     console.log "WebSocket closed", arguments
diff --git a/butterfly/static/coffees/term.coffee b/butterfly/static/coffees/term.coffee
index dcab343..65dbe77 100644
--- a/butterfly/static/coffees/term.coffee
+++ b/butterfly/static/coffees/term.coffee
@@ -35,10 +35,6 @@ cancel = (ev) ->
   ev.cancelBubble = true
   false
 
-isWide = (ch) ->
-  return false  if ch <= "＀"
-  (ch >= "！" and ch <= "ﾾ") or (ch >= "ￂ" and ch <= "ￇ") or (ch >= "ￊ" and ch <= "ￏ") or (ch >= "ￒ" and ch <= "ￗ") or (ch >= "ￚ" and ch <= "ￜ") or (ch >= "￠" and ch <= "￦") or (ch >= "￨" and ch <= "￮")
-
 s = 0
 State =
     normal: s++
@@ -140,7 +136,8 @@ class Terminal
 
         # Terminal lines
         @children = [];
-        for i in [0..@rows]
+        i = @rows
+        while i--
             div = @document.createElement('div')
             @element.appendChild(div)
             @children.push(div)
@@ -348,7 +345,7 @@ class Terminal
                 sendButton ev
             else
                 return if @applicationKeypad
-                @scrollDisp ev.deltaY | 0
+                @scrollDisp if ev.deltaY > 0 then 5 else -5
             cancel ev
 
 
@@ -361,7 +358,6 @@ class Terminal
         y = start
 
         if end >= @lines.length
-            @log "`end` is too large. Most likely a bad CSR."
             end = @lines.length - 1
 
         while y <= end
@@ -423,7 +419,7 @@ class Terminal
                             if ch <= " "
                                 out += "&nbsp;"
                             else
-                                i++ if isWide(ch)
+                                i++ if "\uff00" < ch < "\uffef"
                                 out += ch
                 out += "</span>" if i is x
                 attr = data
@@ -571,7 +567,7 @@ class Terminal
                                 @lines[@y + @ybase][@x] = [@curAttr, ch]
                                 @x++
                                 @updateRange @y
-                                if isWide(ch)
+                                if "\uff00" < ch < "\uffef"
                                     j = @y + @ybase
                                     if @cols < 2 or @x >= @cols
                                         @lines[j][@x - 1] = [@curAttr, " "]
@@ -1037,13 +1033,6 @@ class Terminal
 
                                 @send "\x1bP" + +valid + "$r" + pt + "\x1b\\"
 
-                            # Set Termcap/Terminfo Data (xterm, experimental).
-                            when "+p"
-                                break
-                            # Request Termcap/Terminfo String (xterm, experimental)
-                            # Regular xterm does not even respond to this sequence.
-                            # This can cause a small glitch in vim.
-                            # test: echo -ne '\eP+q6b64\e\\'
                             when "+q"
                                 pt = @currentParam
                                 valid = false
@@ -1085,8 +1074,7 @@ class Terminal
         return true if ev.keyCode > 15 and ev.keyCode < 19
 
         # Handle shift insert and ctrl insert copy/paste usefull for typematrix keyboard
-        if (ev.shiftKey or ev.ctrlKey) and ev.keyCode is 45
-            return true
+        return true if (ev.shiftKey or ev.ctrlKey) and ev.keyCode is 45
 
         # Alt-z works as an escape to relay the following keys to the browser.
         # usefull to trigger browser shortcuts, i.e.: Alt+Z F5 to reload
@@ -1374,18 +1362,6 @@ class Terminal
             @element.classList.remove "bell"
         ), @visualBell
 
-    log: ->
-        return unless @debug
-        return if not @context.console or not @context.console.log
-        args = Array::slice.call(arguments)
-        @context.console.log.apply @context.console, args
-
-    error: ->
-        return unless @debug
-        return if not @context.console or not @context.console.error
-        args = Array::slice.call(arguments)
-        @context.console.error.apply @console.console, args
-
     resize: (x, y) ->
         x = 1 if x < 1
         y = 1 if y < 1
@@ -2182,7 +2158,6 @@ class Terminal
                 when 7
                     @wraparoundMode = true
                 when 66
-                    @log "Serial port requested application keypad."
                     @applicationKeypad = true
                 # X10 Mouse
                 # no release, no motion, no wheel, no modifiers.
@@ -2194,7 +2169,6 @@ class Terminal
                     @normalMouse = params > 1000
                     @mouseEvents = true
                     @element.style.cursor = "default"
-                    @log "Binding to mouse events."
                 when 1004 # send focusin/focusout events
                     # focusin: ^[[I
                     # focusout: ^[[O
@@ -2336,7 +2310,6 @@ class Terminal
                 when 7
                     @wraparoundMode = false
                 when 66
-                    @log "Switching back to normal keypad."
                     @applicationKeypad = false
                 when 9, 1000, 1002 , 1003 # any event mouse
                     @x10Mouse = false
diff --git a/butterfly/static/javascripts/main.js b/butterfly/static/javascripts/main.js
index 4c41abe..6ac75a4 100644
--- a/butterfly/static/javascripts/main.js
+++ b/butterfly/static/javascripts/main.js
@@ -1,5 +1,5 @@
 // Generated by CoffeeScript 1.6.3
-var $, State, Terminal, alt, bench, cancel, cbench, cols, ctrl, e, first, isWide, quit, resize, rows, s, state, term, virtual_input, ws, ws_url;
+var $, State, Terminal, alt, bench, cancel, cbench, cols, ctrl, e, first, quit, resize, rows, s, state, term, virtual_input, ws, ws_url;
 
 term = ws = null;
 
@@ -28,7 +28,9 @@ ws.onerror = function() {
 };
 
 ws.onmessage = function(e) {
-  return term.write(e.data);
+  return setTimeout(function() {
+    return term.write(e.data);
+  }, 1);
 };
 
 ws.onclose = function() {
@@ -185,13 +187,6 @@ cancel = function(ev) {
   return false;
 };
 
-isWide = function(ch) {
-  if (ch <= "＀") {
-    return false;
-  }
-  return (ch >= "！" && ch <= "ﾾ") || (ch >= "ￂ" && ch <= "ￇ") || (ch >= "ￊ" && ch <= "ￏ") || (ch >= "ￒ" && ch <= "ￗ") || (ch >= "ￚ" && ch <= "ￜ") || (ch >= "￠" && ch <= "￦") || (ch >= "￨" && ch <= "￮");
-};
-
 s = 0;
 
 State = {
@@ -286,7 +281,7 @@ Terminal = (function() {
   };
 
   Terminal.prototype.open = function(parent) {
-    var div, i, _i, _ref;
+    var div, i;
     this.parent = parent || this.parent;
     if (!this.parent) {
       throw new Error('Terminal requires a parent element');
@@ -299,7 +294,8 @@ Terminal = (function() {
     this.element.style.outline = 'none';
     this.element.setAttribute('tabindex', 0);
     this.children = [];
-    for (i = _i = 0, _ref = this.rows; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
+    i = this.rows;
+    while (i--) {
       div = this.document.createElement('div');
       this.element.appendChild(div);
       this.children.push(div);
@@ -488,7 +484,7 @@ Terminal = (function() {
         if (_this.applicationKeypad) {
           return;
         }
-        _this.scrollDisp(ev.deltaY | 0);
+        _this.scrollDisp(ev.deltaY > 0 ? 5 : -5);
       }
       return cancel(ev);
     });
@@ -577,7 +573,7 @@ Terminal = (function() {
               if (ch <= " ") {
                 out += "&nbsp;";
               } else {
-                if (isWide(ch)) {
+                if (ch > "＀" && (ch >= "！" && ch <= "ﾾ") || (ch >= "ￂ" && ch <= "ￇ") || (ch >= "ￊ" && ch <= "ￏ") || (ch >= "ￒ" && ch <= "ￗ") || (ch >= "ￚ" && ch <= "ￜ") || (ch >= "￠" && ch <= "￦") || (ch >= "￨" && ch <= "￮")) {
                   i++;
                 }
                 out += ch;
@@ -742,7 +738,7 @@ Terminal = (function() {
                 this.lines[this.y + this.ybase][this.x] = [this.curAttr, ch];
                 this.x++;
                 this.updateRange(this.y);
-                if (isWide(ch)) {
+                if (ch > "＀" && (ch >= "！" && ch <= "ﾾ") || (ch >= "ￂ" && ch <= "ￇ") || (ch >= "ￊ" && ch <= "ￏ") || (ch >= "ￒ" && ch <= "ￗ") || (ch >= "ￚ" && ch <= "ￜ") || (ch >= "￠" && ch <= "￦") || (ch >= "￨" && ch <= "￮")) {
                   j = this.y + this.ybase;
                   if (this.cols < 2 || this.x >= this.cols) {
                     this.lines[j][this.x - 1] = [this.curAttr, " "];