diff --git a/src/behaviors/visibility.js b/src/behaviors/visibility.js
new file mode 100644
index 000000000..f94a7e4ae
--- /dev/null
+++ b/src/behaviors/visibility.js
@@ -0,0 +1,471 @@
+/*
+ * # Semantic - Visibility
+ * http://github.com/jlukic/semantic-ui/
+ *
+ *
+ * Copyright 2013 Contributors
+ * Released under the MIT license
+ * http://opensource.org/licenses/MIT
+ *
+ */
+
+;(function ( $, window, document, undefined ) {
+
+$.fn.visibility = function(parameters) {
+  var
+    $allModules    = $(this),
+    moduleSelector = $allModules.selector || '',
+
+    time           = new Date().getTime(),
+    performance    = [],
+
+    query          = arguments[0],
+    methodInvoked  = (typeof query == 'string'),
+    queryArguments = [].slice.call(arguments, 1),
+    returnedValue
+  ;
+
+  $allModules
+    .each(function() {
+      var
+        settings        = $.extend(true, {}, $.fn.visibility.settings, parameters),
+
+        className       = settings.className,
+        namespace       = settings.namespace,
+        error           = settings.error,
+
+        eventNamespace  = '.' + namespace,
+        moduleNamespace = 'module-' + namespace,
+
+        $module         = $(this),
+        $window         = $(window),
+        $container      = $module.offsetParent(),
+        $context,
+
+        selector        = $module.selector || '',
+        instance        = $module.data(moduleNamespace),
+
+        requestAnimationFrame = window.requestAnimationFrame
+          || window.mozRequestAnimationFrame
+          || window.webkitRequestAnimationFrame
+          || window.msRequestAnimationFrame
+          || function(callback) { setTimeout(callback, 0); },
+
+        element         = this,
+        module
+      ;
+
+      module      = {
+
+        initialize: function() {
+          module.verbose('Initializing visibility', settings);
+
+          module.reset();
+          module.save.position();
+          module.bindEvents();
+          module.instantiate();
+        },
+
+        instantiate: function() {
+          module.verbose('Storing instance of module', module);
+          instance = module;
+          $module
+            .data(moduleNamespace, module)
+          ;
+        },
+
+        destroy: function() {
+          module.verbose('Destroying previous module');
+          $window
+            .off(eventNamespace)
+          ;
+          $module
+            .off(eventNamespace)
+            .removeData(moduleNamespace)
+          ;
+        },
+
+        bindEvents: function() {
+          $window
+            .on('resize', module.event.resize)
+            .on('scroll', module.event.scroll)
+          ;
+        },
+
+        event: {
+          resize: function() {
+            requestAnimationFrame(module.refresh);
+          },
+          scroll: function() {
+            requestAnimationFrame(function() {
+              module.checkVisibility();
+              $.proxy(settings.onScroll, element)();
+            });
+          }
+        },
+
+        refresh: function() {
+          module.save.position();
+          module.checkVisibility();
+          $.proxy(settings.onRefresh, element)();
+        },
+
+        reset: function() {
+          module.cache = {
+            screen  : {},
+            element : {}
+          };
+        },
+
+        checkVisibility: function() {
+          module.save.scroll();
+          module.save.direction();
+          module.save.screenCalculations();
+          module.save.elementCalculations();
+          module.debug('Updating visibility of element', module.cache.element);
+        },
+
+        save: {
+          scroll: function() {
+            module.cache.scroll = $window.scrollTop() + settings.offset;
+          },
+          direction: function() {
+            var
+              scroll     = module.get.scroll(),
+              lastScroll = module.get.lastScroll(),
+              direction
+            ;
+            if(scroll > lastScroll && lastScroll) {
+              direction = 'down';
+            }
+            else if(scroll < lastScroll && lastScroll) {
+              direction = 'up';
+            }
+            else {
+              direction = 'static';
+            }
+            module.cache.direction = direction;
+            return module.cache.direction;
+          },
+          elementPosition: function() {
+            var
+              screen = module.get.screenSize()
+            ;
+            module.verbose('Saving element position');
+            $.extend(module.cache.element, {
+              margin : {
+                top    : parseInt($module.css('margin-top'), 10),
+                bottom : parseInt($module.css('margin-bottom'), 10)
+              },
+              fits   : (element.height < screen.height),
+              offset : $module.offset(),
+              width  : $module.outerWidth(),
+              height : $module.outerHeight()
+            });
+            return module.cache.element;
+          },
+          elementCalculations: function() {
+            var
+              screen  = module.get.screenCalculations(),
+              element = module.get.elementPosition()
+            ;
+            // offset
+            if(settings.includeMargin) {
+              $.extend(module.cache.element, {
+                top    : element.offset.top - element.margin.top,
+                bottom : element.offset.top + element.height + element.margin.bottom
+              });
+            }
+            else {
+              $.extend(module.cache.element, {
+                top    : element.offset.top,
+                bottom : element.offset.top + element.height
+              });
+            }
+            // visibility
+            $.extend(module.cache.element, {
+              topVisible    : (screen.bottom > element.top),
+              topPassed     : (screen.top > element.top),
+              bottomVisible : (screen.bottom > element.bottom),
+              bottomPassed  : (screen.top > element.bottom)
+            });
+            // meta calculations
+            $.extend(module.cache.element, {
+              visible : (module.cache.element.topVisible || module.cache.element.bottomVisible),
+              hidden  : (!module.cache.element.topVisible && !module.cache.element.bottomVisible)
+            });
+          },
+          screenCalculations: function() {
+            var
+              scroll = $window.scrollTop()
+            ;
+            if(module.cache.scroll === undefined) {
+              module.cache.scroll = $window.scrollTop();
+            }
+            module.save.direction();
+            $.extend(module.cache.screen, {
+              top    : scroll + settings.offset,
+              bottom : scroll + settings.offset + module.cache.screen.height
+            });
+            return module.cache.screen;
+          },
+          screenSize: function() {
+            module.verbose('Saving window position');
+            module.cache.screen = {
+              height: $window.height()
+            };
+          },
+          position: function() {
+            module.save.screenSize();
+            module.save.elementPosition();
+          }
+        },
+
+        get: {
+          direction: function() {
+            if(module.cache.direction === undefined) {
+              module.save.direction();
+            }
+            return module.cache.direction;
+          },
+          elementPosition: function() {
+            if(module.cache.element === undefined) {
+              module.save.elementPosition();
+            }
+            return module.cache.element;
+          },
+          elementCalculations: function() {
+            if(module.cache.element === undefined) {
+              module.save.elementCalculations();
+            }
+            return module.cache.element;
+          },
+          screenCalculations: function() {
+            if(module.cache.screen === undefined) {
+              module.save.screenCalculations();
+            }
+            return module.cache.screen;
+          },
+          screenSize: function() {
+            if(module.cache.screen === undefined) {
+              module.save.screenSize();
+            }
+            return module.cache.screen;
+          },
+          scroll: function() {
+            if(module.cache.scroll === undefined) {
+              module.save.scroll();
+            }
+            return module.cache.scroll;
+          },
+          lastScroll: function() {
+            if(module.cache.screen === undefined) {
+              module.debug('First scroll event, no last scroll could be found');
+              return false;
+            }
+            return module.cache.screen.top;
+          }
+        },
+
+        setting: function(name, value) {
+          if( $.isPlainObject(name) ) {
+            $.extend(true, settings, name);
+          }
+          else if(value !== undefined) {
+            settings[name] = value;
+          }
+          else {
+            return settings[name];
+          }
+        },
+        internal: function(name, value) {
+          if( $.isPlainObject(name) ) {
+            $.extend(true, module, name);
+          }
+          else if(value !== undefined) {
+            module[name] = value;
+          }
+          else {
+            return module[name];
+          }
+        },
+        debug: function() {
+          if(settings.debug) {
+            if(settings.performance) {
+              module.performance.log(arguments);
+            }
+            else {
+              module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
+              module.debug.apply(console, arguments);
+            }
+          }
+        },
+        verbose: function() {
+          if(settings.verbose && settings.debug) {
+            if(settings.performance) {
+              module.performance.log(arguments);
+            }
+            else {
+              module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
+              module.verbose.apply(console, arguments);
+            }
+          }
+        },
+        error: function() {
+          module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
+          module.error.apply(console, arguments);
+        },
+        performance: {
+          log: function(message) {
+            var
+              currentTime,
+              executionTime,
+              previousTime
+            ;
+            if(settings.performance) {
+              currentTime   = new Date().getTime();
+              previousTime  = time || currentTime;
+              executionTime = currentTime - previousTime;
+              time          = currentTime;
+              performance.push({
+                'Element'        : element,
+                'Name'           : message[0],
+                'Arguments'      : [].slice.call(message, 1) || '',
+                'Execution Time' : executionTime
+              });
+            }
+            clearTimeout(module.performance.timer);
+            module.performance.timer = setTimeout(module.performance.display, 100);
+          },
+          display: function() {
+            var
+              title = settings.name + ':',
+              totalTime = 0
+            ;
+            time = false;
+            clearTimeout(module.performance.timer);
+            $.each(performance, function(index, data) {
+              totalTime += data['Execution Time'];
+            });
+            title += ' ' + totalTime + 'ms';
+            if(moduleSelector) {
+              title += ' \'' + moduleSelector + '\'';
+            }
+            if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
+              console.groupCollapsed(title);
+              if(console.table) {
+                console.table(performance);
+              }
+              else {
+                $.each(performance, function(index, data) {
+                  console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
+                });
+              }
+              console.groupEnd();
+            }
+            performance = [];
+          }
+        },
+        invoke: function(query, passedArguments, context) {
+          var
+            object = instance,
+            maxDepth,
+            found,
+            response
+          ;
+          passedArguments = passedArguments || queryArguments;
+          context         = element         || context;
+          if(typeof query == 'string' && object !== undefined) {
+            query    = query.split(/[\. ]/);
+            maxDepth = query.length - 1;
+            $.each(query, function(depth, value) {
+              var camelCaseValue = (depth != maxDepth)
+                ? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
+                : query
+              ;
+              if( $.isPlainObject( object[camelCaseValue] ) && (depth != maxDepth) ) {
+                object = object[camelCaseValue];
+              }
+              else if( object[camelCaseValue] !== undefined ) {
+                found = object[camelCaseValue];
+                return false;
+              }
+              else if( $.isPlainObject( object[value] ) && (depth != maxDepth) ) {
+                object = object[value];
+              }
+              else if( object[value] !== undefined ) {
+                found = object[value];
+                return false;
+              }
+              else {
+                return false;
+              }
+            });
+          }
+          if ( $.isFunction( found ) ) {
+            response = found.apply(context, passedArguments);
+          }
+          else if(found !== undefined) {
+            response = found;
+          }
+          if($.isArray(returnedValue)) {
+            returnedValue.push(response);
+          }
+          else if(returnedValue !== undefined) {
+            returnedValue = [returnedValue, response];
+          }
+          else if(response !== undefined) {
+            returnedValue = response;
+          }
+          return found;
+        }
+      };
+
+      if(methodInvoked) {
+        if(instance === undefined) {
+          module.initialize();
+        }
+        module.invoke(query);
+      }
+      else {
+        if(instance !== undefined) {
+          module.destroy();
+        }
+        module.initialize();
+      }
+    })
+  ;
+
+  return (returnedValue !== undefined)
+    ? returnedValue
+    : this
+  ;
+};
+
+$.fn.visibility.settings = {
+
+  name            : 'Visibility',
+  namespace       : 'visibility',
+
+  verbose         : false,
+  debug           : false,
+  performance     : true,
+
+  offset          : 0,
+  includeMargin   : false,
+
+  onTopVisible    : function(){},
+  onBottomVisible : function(){},
+  onTopPassed     : function(){},
+  onBottomPassed  : function(){},
+
+  onRefresh       : function(){},
+  onScroll        : function(){},
+
+  error : {
+    method   : 'The method you called is not defined.'
+  }
+
+};
+
+})( jQuery, window , document );
diff --git a/src/collections/grid.less b/src/collections/grid.less
index 893b3fa8c..0b683ddb3 100755
--- a/src/collections/grid.less
+++ b/src/collections/grid.less
@@ -369,6 +369,11 @@ body > .ui.grid {
   padding-right: @veryRelaxedGutterWidth;
 }
 
+.ui.vertically.divided.grid > .row:before {
+  margin-left: @relaxedGutterWidth;
+  margin-right: @relaxedGutterWidth;
+}
+
 /*----------------------
         Fitted
 -----------------------*/
@@ -383,6 +388,12 @@ body > .ui.grid {
   margin-right: -@relaxedGutterWidth;
 }
 
+.ui.vertically.divided.fitted.grid > .row:before {
+  margin-left: 0%;
+  margin-right: 0%;
+}
+
+
 /*----------------------
        "Floated"
 -----------------------*/
@@ -826,6 +837,8 @@ body > .ui.grid {
     padding: 0em;
     margin: 0em;
   }
+  .ui.stackable.grid > .row > .wide.column,
+  .ui.stackable.grid > .wide.column,
   .ui.stackable.grid > .row > .column,
   .ui.stackable.grid > .column {
     display: block !important;
diff --git a/src/modules/popup.js b/src/modules/popup.js
index 7e3d25f7d..0dee4e43c 100755
--- a/src/modules/popup.js
+++ b/src/modules/popup.js
@@ -1,6 +1,6 @@
 /*
  * # Semantic - Popup
- * http://github.com/semantic-org/semantic-ui/
+ * http://github.com/jlukic/semantic-ui/
  *
  *
  * Copyright 2013 Contributors
@@ -167,14 +167,12 @@ $.fn.popup = function(parameters) {
             if(settings.inline) {
               module.verbose('Inserting popup element inline', $popup);
               $popup
-                .data(moduleNamespace, instance)
                 .insertAfter($module)
               ;
             }
             else {
               module.verbose('Appending popup element to body', $popup);
               $popup
-                .data(moduleNamespace, instance)
                 .appendTo( $context )
               ;
             }
@@ -209,9 +207,10 @@ $.fn.popup = function(parameters) {
           if( !module.exists() ) {
             module.create();
           }
-          module.save.conditions();
-          module.set.position();
-          module.animate.show(callback);
+          if( module.set.position() ) {
+            module.save.conditions();
+            module.animate.show(callback);
+          }
         },
 
 
@@ -220,9 +219,9 @@ $.fn.popup = function(parameters) {
           $module
             .removeClass(className.visible)
           ;
-          module.restore.conditions();
           module.unbind.close();
           if( module.is.visible() ) {
+            module.restore.conditions();
             module.animate.hide(callback);
           }
         },
@@ -276,8 +275,8 @@ $.fn.popup = function(parameters) {
           conditions: function() {
             if(module.cache && module.cache.title) {
               $module.attr('title', module.cache.title);
-              module.verbose('Restoring original attributes', module.cache.title);
             }
+            module.verbose('Restoring original attributes', module.cache.title);
             return true;
           }
         },
@@ -463,7 +462,7 @@ $.fn.popup = function(parameters) {
               break;
               case 'top center':
                 positioning = {
-                  bottom :  parentHeight - offset.top + distanceAway,
+                  bottom : parentHeight - offset.top + distanceAway,
                   left   : offset.left + (width / 2) - (popupWidth / 2) + arrowOffset,
                   top    : 'auto',
                   right  : 'auto'
@@ -472,14 +471,14 @@ $.fn.popup = function(parameters) {
               case 'top right':
                 positioning = {
                   top    : 'auto',
-                  bottom :  parentHeight - offset.top + distanceAway,
+                  bottom : parentHeight - offset.top + distanceAway,
                   left   : offset.left + width + arrowOffset,
                   right  : 'auto'
                 };
               break;
               case 'left center':
                 positioning = {
-                  top    :  offset.top + (height / 2) - (popupHeight / 2) + arrowOffset,
+                  top    : offset.top + (height / 2) - (popupHeight / 2) + arrowOffset,
                   right  : parentWidth - offset.left + distanceAway,
                   left   : 'auto',
                   bottom : 'auto'
@@ -487,7 +486,7 @@ $.fn.popup = function(parameters) {
               break;
               case 'right center':
                 positioning = {
-                  top    :  offset.top + (height / 2) - (popupHeight / 2) + arrowOffset,
+                  top    : offset.top + (height / 2) - (popupHeight / 2) + arrowOffset,
                   left   : offset.left + width + distanceAway,
                   bottom : 'auto',
                   right  : 'auto'
@@ -495,7 +494,7 @@ $.fn.popup = function(parameters) {
               break;
               case 'bottom left':
                 positioning = {
-                  top    :  offset.top + height + distanceAway,
+                  top    : offset.top + height + distanceAway,
                   right  : parentWidth - offset.left - arrowOffset,
                   left   : 'auto',
                   bottom : 'auto'
@@ -503,7 +502,7 @@ $.fn.popup = function(parameters) {
               break;
               case 'bottom center':
                 positioning = {
-                  top    :  offset.top + height + distanceAway,
+                  top    : offset.top + height + distanceAway,
                   left   : offset.left + (width / 2) - (popupWidth / 2) + arrowOffset,
                   bottom : 'auto',
                   right  : 'auto'
@@ -511,7 +510,7 @@ $.fn.popup = function(parameters) {
               break;
               case 'bottom right':
                 positioning = {
-                  top    :  offset.top + height + distanceAway,
+                  top    : offset.top + height + distanceAway,
                   left   : offset.left + width + arrowOffset,
                   bottom : 'auto',
                   right  : 'auto'
@@ -594,10 +593,16 @@ $.fn.popup = function(parameters) {
 
         reset: function() {
           $popup
-            .attr('style', '')
-            .removeAttr('style')
+            .removeClass(className.visible)
           ;
-          if(!settings.preserve) {
+          if(settings.preserve) {
+            if($.fn.transition !== undefined) {
+              $popup
+                .transition('remove transition')
+              ;
+            }
+          }
+          else {
             module.remove();
           }
         },
diff --git a/src/modules/transition.js b/src/modules/transition.js
index 295f66a7c..a2cadf8c4 100755
--- a/src/modules/transition.js
+++ b/src/modules/transition.js
@@ -1,6 +1,6 @@
 /*
  * # Semantic - Transition
- * http://github.com/semantic-org/semantic-ui/
+ * http://github.com/jlukic/semantic-ui/
  *
  *
  * Copyright 2013 Contributors
@@ -374,6 +374,13 @@ $.fn.transition = function() {
               .removeClass(className.looping)
             ;
             module.forceRepaint();
+          },
+
+          transition: function() {
+            $module
+              .removeClass(className.visible)
+              .removeClass(className.hidden)
+            ;
           }
 
         },