diff --git a/examples/basic.html b/examples/basic.html
index 7864743..1819f19 100644
--- a/examples/basic.html
+++ b/examples/basic.html
@@ -46,6 +46,7 @@
 <script src="../bower_components/outlayer/item.js"></script>
 <script src="../bower_components/outlayer/outlayer.js"></script>
 
+<script src="../layout-mode.js"></script>
 <script src="../item.js"></script>
 <script src="../isotope.js"></script>
 <script src="../layout-modes/fit-rows.js"></script>
diff --git a/examples/masonry.html b/examples/masonry.html
index 1dc0316..3b981ed 100644
--- a/examples/masonry.html
+++ b/examples/masonry.html
@@ -3,7 +3,7 @@
 <head>
   <meta charset="utf-8">
 
-  <title>sorting</title>
+  <title>masonry</title>
 
   <link rel="stylesheet" href="examples.css" />
   <style>
@@ -159,11 +159,14 @@
 <script src="../layout-mode.js"></script>
 <script src="../isotope.js"></script>
 <script src="../layout-modes/masonry.js"></script>
+<script src="../layout-modes/fit-rows.js"></script>
 
 <script>
 docReady( function() {
   var container = document.querySelector('#container');
   var iso = window.iso = new Isotope( container, {
+    // sortBy: 'symbol',
+    // filter: '.metal',
     layoutMode: 'masonry',
     masonry: {
       columnWidth: 90
diff --git a/isotope.js b/isotope.js
index 65a620d..0bf36f3 100644
--- a/isotope.js
+++ b/isotope.js
@@ -214,31 +214,23 @@ function isotopeDefinition( Outlayer, getSize, matchesSelector, Item, layoutMode
   // -------------------------- methods -------------------------- //
 
   Isotope.prototype._resetLayout = function() {
-    this._modeMethod( '_resetLayout', arguments );
+    this._mode()._resetLayout();
   };
 
-  Isotope.prototype._getItemLayoutPosition = function( /* item  */) {
-    return this._modeMethod( '_getItemLayoutPosition', arguments );
+  Isotope.prototype._getItemLayoutPosition = function( item  ) {
+    return this._mode()._getItemLayoutPosition( item );
   };
 
-  Isotope.prototype._manageStamp = function(/* stamp */) {
-    this._modeMethod( '_manageStamp', arguments );
+  Isotope.prototype._manageStamp = function( stamp ) {
+    this._mode()._manageStamp( stamp );
   };
 
   Isotope.prototype._getContainerSize = function() {
-    return this._modeMethod( '_getContainerSize', arguments );
+    return this._mode()._getContainerSize();
   };
 
-  Isotope.prototype._modeMethod = function( methodName, args ) {
-    var mode = this._mode();
-    var modeMethod = mode[ methodName ];
-    // use mode's method, if there
-    if ( modeMethod ) {
-      return modeMethod.apply( mode, args );
-    } else {
-      // otherwise, default to Outlayer prototype
-      return Outlayer.prototype[ methodName ].apply( this, args );
-    }
+  Isotope.prototype.resize = function() {
+    this._mode().resize();
   };
 
   return Isotope;
diff --git a/layout-mode.js b/layout-mode.js
index f93c801..e1e3daa 100644
--- a/layout-mode.js
+++ b/layout-mode.js
@@ -6,9 +6,10 @@
 
 // var Isotope = window.Isotope;
 
+function layoutModeDefinition( Outlayer ) {
+
 var layoutMode = {};
 
-layoutMode.options = {};
 layoutMode.modes = {};
 
 layoutMode.create = function( namespace, options ) {
@@ -31,34 +32,59 @@ layoutMode.create = function( namespace, options ) {
     LayoutMode.options = options;
   }
 
-  // Outlayer.prototype._getMeasurement = function( measurement, size ) {
-  //   var option = this.options[ measurement ];
-  //   var elem;
-  //   if ( !option ) {
-  //     // default to 0
-  //     this[ measurement ] = 0;
-  //   } else {
-  //     if ( typeof option === 'string' ) {
-  //       elem = this.element.querySelector( option );
-  //     } else if ( isElement( option ) ) {
-  //       elem = option;
-  //     }
-  //     // use size of element, if element
-  //     this[ measurement ] = elem ? getSize( elem )[ size ] : option;
-  //   }
-  // };
-
-
-
   LayoutMode.prototype.namespace = namespace;
-  // set default options
-  // layoutMode.options[ namespace ] = options || {};
   // register in Isotope
   layoutMode.modes[ namespace ] = LayoutMode;
+
+  // -------------------------- methods -------------------------- //
+
+  // default method handler
+  // trigger Outlayer method with Isotope as this
+  LayoutMode.prototype._outlayerMethod = function( methodName, args ) {
+    return Outlayer.prototype[ methodName ].apply( this.isotope, args );
+  };
+
+  LayoutMode.prototype._resetLayout = function() {
+    this._outlayerMethod( '_resetLayout', arguments );
+  };
+
+  LayoutMode.prototype._getItemLayoutPosition = function( /* item  */) {
+    return this._outlayerMethod( '_getItemLayoutPosition', arguments );
+  };
+
+  LayoutMode.prototype._manageStamp = function(/* stamp */) {
+    this._outlayerMethod( '_manageStamp', arguments );
+  };
+
+  LayoutMode.prototype._getContainerSize = function() {
+    return this._outlayerMethod( '_getContainerSize', arguments );
+  };
+
+  LayoutMode.prototype.resize = function() {
+    this._outlayerMethod( 'resize', arguments );
+  };
+
   return LayoutMode;
 };
 
-var Isotope = window.Isotope = window.Isotope || {};
-Isotope.layoutMode = layoutMode;
+
+return layoutMode;
+
+}
+
+if ( typeof define === 'function' && define.amd ) {
+  // AMD
+  define( [
+      'outlayer/outlayer'
+    ],
+    layoutModeDefinition );
+} else {
+  // browser global
+  window.Isotope = window.Isotope || {};
+  window.Isotope.layoutMode = layoutModeDefinition(
+    window.Outlayer
+  );
+}
+
 
 })( window );
diff --git a/layout-modes/fit-rows.js b/layout-modes/fit-rows.js
index da7d523..6e8e4e5 100644
--- a/layout-modes/fit-rows.js
+++ b/layout-modes/fit-rows.js
@@ -2,14 +2,16 @@
 
 'use strict';
 
-var Isotope = window.Isotope;
-var Outlayer = window.Outlayer;
-var FitRows = Isotope.createLayoutMode( 'fitRows', {
+function fitRowsDefinition( layoutMode ) {
+
+var FitRows = layoutMode.create( 'fitRows', {
   foo: 'bar'
 });
 
+var __resetLayout = FitRows.prototype._resetLayout;
 FitRows.prototype._resetLayout = function() {
-  Outlayer.prototype._resetLayout.apply( this.isotope, arguments );
+  // call original _resetLayout
+  __resetLayout.call( this );
   this.x = 0;
   this.y = 0;
   this.maxY = 0;
@@ -39,4 +41,21 @@ FitRows.prototype._getContainerSize = function() {
   return { height: this.maxY };
 };
 
+return FitRows;
+
+}
+
+if ( typeof define === 'function' && define.amd ) {
+  // AMD
+  define( [
+      '../layout-mode'
+    ],
+    fitRowsDefinition );
+} else {
+  // browser global
+  fitRowsDefinition(
+    window.Isotope.layoutMode
+  );
+}
+
 })( window );
