diff --git a/app/assets/javascripts/behaviors/autosize.js.coffee b/app/assets/javascripts/behaviors/autosize.js.coffee
index b32072e61ee..a072fe48a98 100644
--- a/app/assets/javascripts/behaviors/autosize.js.coffee
+++ b/app/assets/javascripts/behaviors/autosize.js.coffee
@@ -1,4 +1,22 @@
+#= require jquery.ba-resize
 #= require autosize
 
 $ ->
-  autosize($('.js-autosize'))
+  $fields = $('.js-autosize')
+
+  $fields.on 'autosize:resized', ->
+    $field = $(@)
+    $field.data('height', $field.outerHeight())
+
+  $fields.on 'resize.autosize', ->
+    $field = $(@)
+
+    if $field.data('height') != $field.outerHeight()
+      $field.data('height', $field.outerHeight())
+      autosize.destroy($field)
+      $field.css('max-height', window.outerHeight)
+
+  autosize($fields)
+  autosize.update($fields)
+
+  $fields.css('resize', 'vertical')
diff --git a/app/assets/stylesheets/framework/markdown_area.scss b/app/assets/stylesheets/framework/markdown_area.scss
index 6732343802a..1d8611b04dc 100644
--- a/app/assets/stylesheets/framework/markdown_area.scss
+++ b/app/assets/stylesheets/framework/markdown_area.scss
@@ -83,7 +83,7 @@
   background: #FFF;
   border: 1px solid #ddd;
   min-height: 140px;
-  max-height: 430px;
+  max-height: 500px;
   padding: 5px;
   box-shadow: none;
   width: 100%;
diff --git a/app/assets/stylesheets/pages/note_form.scss b/app/assets/stylesheets/pages/note_form.scss
index 32ba1676333..158c2a47862 100644
--- a/app/assets/stylesheets/pages/note_form.scss
+++ b/app/assets/stylesheets/pages/note_form.scss
@@ -147,7 +147,7 @@
 .edit_note {
   .markdown-area {
     min-height: 140px;
-    max-height: 430px;
+    max-height: 500px;
   }
   .note-form-actions {
     background: transparent;
diff --git a/spec/javascripts/behaviors/autosize_spec.js.coffee b/spec/javascripts/behaviors/autosize_spec.js.coffee
new file mode 100644
index 00000000000..7fc1d19c35f
--- /dev/null
+++ b/spec/javascripts/behaviors/autosize_spec.js.coffee
@@ -0,0 +1,11 @@
+#= require behaviors/autosize
+
+describe 'Autosize behavior', ->
+  beforeEach ->
+    fixture.set('<textarea class="js-autosize" style="resize: vertical"></textarea>')
+
+  it 'does not overwrite the resize property', ->
+    load()
+    expect($('textarea')).toHaveCss(resize: 'vertical')
+
+  load = -> $(document).trigger('page:load')
diff --git a/vendor/assets/javascripts/jquery.ba-resize.js b/vendor/assets/javascripts/jquery.ba-resize.js
new file mode 100644
index 00000000000..1f41d379153
--- /dev/null
+++ b/vendor/assets/javascripts/jquery.ba-resize.js
@@ -0,0 +1,246 @@
+/*!
+ * jQuery resize event - v1.1 - 3/14/2010
+ * http://benalman.com/projects/jquery-resize-plugin/
+ * 
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+
+// Script: jQuery resize event
+//
+// *Version: 1.1, Last updated: 3/14/2010*
+// 
+// Project Home - http://benalman.com/projects/jquery-resize-plugin/
+// GitHub       - http://github.com/cowboy/jquery-resize/
+// Source       - http://github.com/cowboy/jquery-resize/raw/master/jquery.ba-resize.js
+// (Minified)   - http://github.com/cowboy/jquery-resize/raw/master/jquery.ba-resize.min.js (1.0kb)
+// 
+// About: License
+// 
+// Copyright (c) 2010 "Cowboy" Ben Alman,
+// Dual licensed under the MIT and GPL licenses.
+// http://benalman.com/about/license/
+// 
+// About: Examples
+// 
+// This working example, complete with fully commented code, illustrates a few
+// ways in which this plugin can be used.
+// 
+// resize event - http://benalman.com/code/projects/jquery-resize/examples/resize/
+// 
+// About: Support and Testing
+// 
+// Information about what version or versions of jQuery this plugin has been
+// tested with, what browsers it has been tested in, and where the unit tests
+// reside (so you can test it yourself).
+// 
+// jQuery Versions - 1.3.2, 1.4.1, 1.4.2
+// Browsers Tested - Internet Explorer 6-8, Firefox 2-3.6, Safari 3-4, Chrome, Opera 9.6-10.1.
+// Unit Tests      - http://benalman.com/code/projects/jquery-resize/unit/
+// 
+// About: Release History
+// 
+// 1.1 - (3/14/2010) Fixed a minor bug that was causing the event to trigger
+//       immediately after bind in some circumstances. Also changed $.fn.data
+//       to $.data to improve performance.
+// 1.0 - (2/10/2010) Initial release
+
+(function($,window,undefined){
+  '$:nomunge'; // Used by YUI compressor.
+  
+  // A jQuery object containing all non-window elements to which the resize
+  // event is bound.
+  var elems = $([]),
+    
+    // Extend $.resize if it already exists, otherwise create it.
+    jq_resize = $.resize = $.extend( $.resize, {} ),
+    
+    timeout_id,
+    
+    // Reused strings.
+    str_setTimeout = 'setTimeout',
+    str_resize = 'resize',
+    str_data = str_resize + '-special-event',
+    str_delay = 'delay',
+    str_throttle = 'throttleWindow';
+  
+  // Property: jQuery.resize.delay
+  // 
+  // The numeric interval (in milliseconds) at which the resize event polling
+  // loop executes. Defaults to 250.
+  
+  jq_resize[ str_delay ] = 250;
+  
+  // Property: jQuery.resize.throttleWindow
+  // 
+  // Throttle the native window object resize event to fire no more than once
+  // every <jQuery.resize.delay> milliseconds. Defaults to true.
+  // 
+  // Because the window object has its own resize event, it doesn't need to be
+  // provided by this plugin, and its execution can be left entirely up to the
+  // browser. However, since certain browsers fire the resize event continuously
+  // while others do not, enabling this will throttle the window resize event,
+  // making event behavior consistent across all elements in all browsers.
+  // 
+  // While setting this property to false will disable window object resize
+  // event throttling, please note that this property must be changed before any
+  // window object resize event callbacks are bound.
+  
+  jq_resize[ str_throttle ] = true;
+  
+  // Event: resize event
+  // 
+  // Fired when an element's width or height changes. Because browsers only
+  // provide this event for the window element, for other elements a polling
+  // loop is initialized, running every <jQuery.resize.delay> milliseconds
+  // to see if elements' dimensions have changed. You may bind with either
+  // .resize( fn ) or .bind( "resize", fn ), and unbind with .unbind( "resize" ).
+  // 
+  // Usage:
+  // 
+  // > jQuery('selector').bind( 'resize', function(e) {
+  // >   // element's width or height has changed!
+  // >   ...
+  // > });
+  // 
+  // Additional Notes:
+  // 
+  // * The polling loop is not created until at least one callback is actually
+  //   bound to the 'resize' event, and this single polling loop is shared
+  //   across all elements.
+  // 
+  // Double firing issue in jQuery 1.3.2:
+  // 
+  // While this plugin works in jQuery 1.3.2, if an element's event callbacks
+  // are manually triggered via .trigger( 'resize' ) or .resize() those
+  // callbacks may double-fire, due to limitations in the jQuery 1.3.2 special
+  // events system. This is not an issue when using jQuery 1.4+.
+  // 
+  // > // While this works in jQuery 1.4+
+  // > $(elem).css({ width: new_w, height: new_h }).resize();
+  // > 
+  // > // In jQuery 1.3.2, you need to do this:
+  // > var elem = $(elem);
+  // > elem.css({ width: new_w, height: new_h });
+  // > elem.data( 'resize-special-event', { width: elem.width(), height: elem.height() } );
+  // > elem.resize();
+      
+  $.event.special[ str_resize ] = {
+    
+    // Called only when the first 'resize' event callback is bound per element.
+    setup: function() {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery will bind the event using DOM methods. Since only 'window'
+      // objects have a .setTimeout method, this should be a sufficient test.
+      // Unless, of course, we're throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var elem = $(this);
+      
+      // Add this element to the list of internal elements to monitor.
+      elems = elems.add( elem );
+      
+      // Initialize data store on the element.
+      $.data( this, str_data, { w: elem.width(), h: elem.height() } );
+      
+      // If this is the first element added, start the polling loop.
+      if ( elems.length === 1 ) {
+        loopy();
+      }
+    },
+    
+    // Called only when the last 'resize' event callback is unbound per element.
+    teardown: function() {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery will unbind the event using DOM methods. Since only 'window'
+      // objects have a .setTimeout method, this should be a sufficient test.
+      // Unless, of course, we're throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var elem = $(this);
+      
+      // Remove this element from the list of internal elements to monitor.
+      elems = elems.not( elem );
+      
+      // Remove any data stored on the element.
+      elem.removeData( str_data );
+      
+      // If this is the last element removed, stop the polling loop.
+      if ( !elems.length ) {
+        clearTimeout( timeout_id );
+      }
+    },
+    
+    // Called every time a 'resize' event callback is bound per element (new in
+    // jQuery 1.4).
+    add: function( handleObj ) {
+      // Since window has its own native 'resize' event, return false so that
+      // jQuery doesn't modify the event object. Unless, of course, we're
+      // throttling the 'resize' event for window.
+      if ( !jq_resize[ str_throttle ] && this[ str_setTimeout ] ) { return false; }
+      
+      var old_handler;
+      
+      // The new_handler function is executed every time the event is triggered.
+      // This is used to update the internal element data store with the width
+      // and height when the event is triggered manually, to avoid double-firing
+      // of the event callback. See the "Double firing issue in jQuery 1.3.2"
+      // comments above for more information.
+      
+      function new_handler( e, w, h ) {
+        var elem = $(this),
+          data = $.data( this, str_data );
+        
+        // If called from the polling loop, w and h will be passed in as
+        // arguments. If called manually, via .trigger( 'resize' ) or .resize(),
+        // those values will need to be computed.
+        data.w = w !== undefined ? w : elem.width();
+        data.h = h !== undefined ? h : elem.height();
+        
+        old_handler.apply( this, arguments );
+      };
+      
+      // This may seem a little complicated, but it normalizes the special event
+      // .add method between jQuery 1.4/1.4.1 and 1.4.2+
+      if ( $.isFunction( handleObj ) ) {
+        // 1.4, 1.4.1
+        old_handler = handleObj;
+        return new_handler;
+      } else {
+        // 1.4.2+
+        old_handler = handleObj.handler;
+        handleObj.handler = new_handler;
+      }
+    }
+    
+  };
+  
+  function loopy() {
+    
+    // Start the polling loop, asynchronously.
+    timeout_id = window[ str_setTimeout ](function(){
+      
+      // Iterate over all elements to which the 'resize' event is bound.
+      elems.each(function(){
+        var elem = $(this),
+          width = elem.width(),
+          height = elem.height(),
+          data = $.data( this, str_data );
+        
+        // If element size has changed since the last time, update the element
+        // data store and trigger the 'resize' event.
+        if ( width !== data.w || height !== data.h ) {
+          elem.trigger( str_resize, [ data.w = width, data.h = height ] );
+        }
+        
+      });
+      
+      // Loop.
+      loopy();
+      
+    }, jq_resize[ str_delay ] );
+    
+  };
+  
+})(jQuery,this);