diff --git a/dist/css/select2.css b/dist/css/select2.css
index 3cbb898c..a0eccb30 100644
--- a/dist/css/select2.css
+++ b/dist/css/select2.css
@@ -107,22 +107,22 @@
   border-bottom-right-radius: 0; }
 .select2-container.select2-theme-default .dropdown .search input {
   border: 1px solid #aaa; }
-.select2-container.select2-theme-default .dropdown .results {
+.select2-container.select2-theme-default .dropdown .results > .options {
   max-height: 200px;
-  overflow-y: scroll; }
-  .select2-container.select2-theme-default .dropdown .results .options .option.group {
-    padding: 0; }
-    .select2-container.select2-theme-default .dropdown .results .options .option.group .group-label {
-      cursor: default;
-      display: block;
-      padding: 6px; }
-  .select2-container.select2-theme-default .dropdown .results .options .option[aria-disabled=true] {
-    color: #666; }
-  .select2-container.select2-theme-default .dropdown .results .options .option[aria-selected=true] {
-    background-color: #ddd; }
-  .select2-container.select2-theme-default .dropdown .results .options .option[aria-selected].highlighted {
-    background-color: #5897fb;
-    color: white; }
+  overflow-y: auto; }
+.select2-container.select2-theme-default .dropdown .results .options .option.group {
+  padding: 0; }
+  .select2-container.select2-theme-default .dropdown .results .options .option.group .group-label {
+    cursor: default;
+    display: block;
+    padding: 6px; }
+.select2-container.select2-theme-default .dropdown .results .options .option[aria-disabled=true] {
+  color: #666; }
+.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected=true] {
+  background-color: #ddd; }
+.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected].highlighted {
+  background-color: #5897fb;
+  color: white; }
 
 .s2-container {
   margin: 0;
diff --git a/dist/css/select2.min.css b/dist/css/select2.min.css
index 7141691a..5a96ebb9 100644
--- a/dist/css/select2.min.css
+++ b/dist/css/select2.min.css
@@ -1 +1 @@
-.select2-container{box-sizing:border-box;display:inline-block;margin:0;position:relative;vertical-align:middle;}.select2-container .selection .single-select{box-sizing:border-box;cursor:pointer;display:block;height:28px;user-select:none;-webkit-user-select:none;}.select2-container .selection .single-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .selection .multiple-select{box-sizing:border-box;cursor:pointer;display:block;min-height:32px;user-select:none;-webkit-user-select:none;}.select2-container .selection .multiple-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .dropdown{background-color:white;border:1px solid #aaa;border-radius:4px;box-sizing:border-box;display:block;position:absolute;left:-100000px;width:100%;z-index:100;}.select2-container .dropdown .search{display:block;padding:4px;}.select2-container .dropdown .search input{outline:0;padding:4px;width:100%;}.select2-container .dropdown .results{display:block;}.select2-container .dropdown .results .options{list-style:none;margin:0;padding:0;}.select2-container .dropdown .results .options .option{padding:6px;user-select:none;-webkit-user-select:none;}.select2-container .dropdown .results .options .option[aria-selected]{cursor:pointer;}.select2-container.open .dropdown{border-top:none;border-top-left-radius:0;border-top-right-radius:0;left:0;}.select2-container.select2-theme-default .selection .single-select{background-color:#fff;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection{color:#444;line-height:28px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection .placeholder{color:#999;}.select2-container.select2-theme-default .selection .multiple-select{background-color:white;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection{list-style:none;margin:0;padding:5px;padding-bottom:0;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .placeholder{color:#999;float:left;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice{background-color:#e4e4e4;border:1px solid #aaa;border-radius:4px;float:left;margin-right:5px;margin-bottom:5px;padding:0 5px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice .remove{color:#999;display:inline-block;font-weight:bold;margin-right:2px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice .remove:hover{color:#333;}.select2-container.select2-theme-default.open .selection .single-select,.select2-container.select2-theme-default.open .selection .multiple-select{border-bottom-left-radius:0;border-bottom-right-radius:0;}.select2-container.select2-theme-default .dropdown .search input{border:1px solid #aaa;}.select2-container.select2-theme-default .dropdown .results{max-height:200px;overflow-y:scroll;}.select2-container.select2-theme-default .dropdown .results .options .option.group{padding:0;}.select2-container.select2-theme-default .dropdown .results .options .option.group .group-label{cursor:default;display:block;padding:6px;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-disabled=true]{color:#666;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected=true]{background-color:#ddd;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected].highlighted{background-color:#5897fb;color:white;}.s2-container{margin:0;position:relative;zoom:1;vertical-align:middle;}.s2-container.s2-active{border:1px solid #5897fb;border-top:bottom;}.s2-container .s2-single-select{display:block;height:26px;padding:0 0 0 8px;overflow:hidden;position:relative;border:1px solid #aaa;white-space:nowrap;line-height:26px;color:#444;text-decoration:none;border-radius:4px;background-clip:padding-box;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-color:#fff;background-image:-webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.5, #fff));background-image:-webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);background-image:-moz-linear-gradient(center bottom, #eee 0%, #fff 50%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);background-image:linear-gradient(to top, #eee 0%, #fff 50%);}.s2-container .s2-single-select .s2-selection{margin-right:26px;display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}.s2-container .s2-open .select2-container-active .select2-choice,.s2-container .s2-open .select2-container-active .select2-choices{border:1px solid #5897fb;outline:none;-webkit-box-shadow:0 0 5px rgba(0, 0, 0, 0.3);box-shadow:0 0 5px rgba(0, 0, 0, 0.3);}.s2-search input{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}.s2-dropdown{width:100%;margin-top:-1px;position:absolute;z-index:9999;overflow:scroll;background:#fff;color:#000;border:1px solid #5897fb;border-top:none;border-radius:0 0 4px 4px;-webkit-box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);}.s2-hidden{display:none;}
\ No newline at end of file
+.select2-container{box-sizing:border-box;display:inline-block;margin:0;position:relative;vertical-align:middle;}.select2-container .selection .single-select{box-sizing:border-box;cursor:pointer;display:block;height:28px;user-select:none;-webkit-user-select:none;}.select2-container .selection .single-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .selection .multiple-select{box-sizing:border-box;cursor:pointer;display:block;min-height:32px;user-select:none;-webkit-user-select:none;}.select2-container .selection .multiple-select .rendered-selection{display:block;overflow:hidden;padding-left:8px;text-overflow:ellipsis;}.select2-container .dropdown{background-color:white;border:1px solid #aaa;border-radius:4px;box-sizing:border-box;display:block;position:absolute;left:-100000px;width:100%;z-index:100;}.select2-container .dropdown .search{display:block;padding:4px;}.select2-container .dropdown .search input{outline:0;padding:4px;width:100%;}.select2-container .dropdown .results{display:block;}.select2-container .dropdown .results .options{list-style:none;margin:0;padding:0;}.select2-container .dropdown .results .options .option{padding:6px;user-select:none;-webkit-user-select:none;}.select2-container .dropdown .results .options .option[aria-selected]{cursor:pointer;}.select2-container.open .dropdown{border-top:none;border-top-left-radius:0;border-top-right-radius:0;left:0;}.select2-container.select2-theme-default .selection .single-select{background-color:#fff;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection{color:#444;line-height:28px;}.select2-container.select2-theme-default .selection .single-select .rendered-selection .placeholder{color:#999;}.select2-container.select2-theme-default .selection .multiple-select{background-color:white;border:1px solid #aaa;border-radius:4px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection{list-style:none;margin:0;padding:5px;padding-bottom:0;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .placeholder{color:#999;float:left;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice{background-color:#e4e4e4;border:1px solid #aaa;border-radius:4px;float:left;margin-right:5px;margin-bottom:5px;padding:0 5px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice .remove{color:#999;display:inline-block;font-weight:bold;margin-right:2px;}.select2-container.select2-theme-default .selection .multiple-select .rendered-selection .choice .remove:hover{color:#333;}.select2-container.select2-theme-default.open .selection .single-select,.select2-container.select2-theme-default.open .selection .multiple-select{border-bottom-left-radius:0;border-bottom-right-radius:0;}.select2-container.select2-theme-default .dropdown .search input{border:1px solid #aaa;}.select2-container.select2-theme-default .dropdown .results>.options{max-height:200px;overflow-y:auto;}.select2-container.select2-theme-default .dropdown .results .options .option.group{padding:0;}.select2-container.select2-theme-default .dropdown .results .options .option.group .group-label{cursor:default;display:block;padding:6px;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-disabled=true]{color:#666;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected=true]{background-color:#ddd;}.select2-container.select2-theme-default .dropdown .results .options .option[aria-selected].highlighted{background-color:#5897fb;color:white;}.s2-container{margin:0;position:relative;zoom:1;vertical-align:middle;}.s2-container.s2-active{border:1px solid #5897fb;border-top:bottom;}.s2-container .s2-single-select{display:block;height:26px;padding:0 0 0 8px;overflow:hidden;position:relative;border:1px solid #aaa;white-space:nowrap;line-height:26px;color:#444;text-decoration:none;border-radius:4px;background-clip:padding-box;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;background-color:#fff;background-image:-webkit-gradient(linear, left bottom, left top, color-stop(0, #eee), color-stop(0.5, #fff));background-image:-webkit-linear-gradient(center bottom, #eee 0%, #fff 50%);background-image:-moz-linear-gradient(center bottom, #eee 0%, #fff 50%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr = '#ffffff', endColorstr = '#eeeeee', GradientType = 0);background-image:linear-gradient(to top, #eee 0%, #fff 50%);}.s2-container .s2-single-select .s2-selection{margin-right:26px;display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}.s2-container .s2-open .select2-container-active .select2-choice,.s2-container .s2-open .select2-container-active .select2-choices{border:1px solid #5897fb;outline:none;-webkit-box-shadow:0 0 5px rgba(0, 0, 0, 0.3);box-shadow:0 0 5px rgba(0, 0, 0, 0.3);}.s2-search input{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;}.s2-dropdown{width:100%;margin-top:-1px;position:absolute;z-index:9999;overflow:scroll;background:#fff;color:#000;border:1px solid #5897fb;border-top:none;border-radius:0 0 4px 4px;-webkit-box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);box-shadow:0 4px 5px rgba(0, 0, 0, 0.15);}.s2-hidden{display:none;}
\ No newline at end of file
diff --git a/dist/js/select2.amd.full.js b/dist/js/select2.amd.full.js
index bf832c2c..64c42154 100644
--- a/dist/js/select2.amd.full.js
+++ b/dist/js/select2.amd.full.js
@@ -348,6 +348,16 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
+
+      var currentOffset = self.$results.offset().top;
+      var nextTop = $next.offset().top;
+      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextTop - currentOffset < 0) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     container.on('results:next', function () {
@@ -367,8 +377,17 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
-      console.log($next.offset().top, self.$results.parent().scrollTop());
-      //self.$results.parents().scrollTop($next.offset().top);
+
+      var currentOffset = self.$results.offset().top +
+        self.$results.outerHeight(false);
+      var nextBottom = $next.offset().top + $next.outerHeight(false);
+      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextBottom > currentOffset) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     this.$results.on('mouseup', '.option[aria-selected]', function (evt) {
@@ -545,7 +564,7 @@ define('select2/selection/single',[
       // User exits the container
     });
 
-    this.$selection.on('keyup', function (evt) {
+    this.$selection.on('keydown', function (evt) {
       var key = evt.which;
 
       if (container.isOpen()) {
@@ -553,8 +572,12 @@ define('select2/selection/single',[
           self.trigger('results:select');
         } else if (key == KEYS.UP) {
           self.trigger('results:previous');
+
+          evt.preventDefault();
         } else if (key == KEYS.DOWN) {
           self.trigger('results:next');
+
+          evt.preventDefault();
         }
       } else {
         if (key == KEYS.ENTER || key == KEYS.SPACE) {
@@ -759,7 +782,7 @@ define('select2/data/base',[
   };
 
   BaseAdapter.prototype.generateResultId = function (data) {
-    var id = '';
+    var id = 'select2-result-';
 
     for (var i = 0; i < 4; i++) {
       var r = Math.floor(Math.random() * 16);
diff --git a/dist/js/select2.amd.js b/dist/js/select2.amd.js
index bf832c2c..64c42154 100644
--- a/dist/js/select2.amd.js
+++ b/dist/js/select2.amd.js
@@ -348,6 +348,16 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
+
+      var currentOffset = self.$results.offset().top;
+      var nextTop = $next.offset().top;
+      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextTop - currentOffset < 0) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     container.on('results:next', function () {
@@ -367,8 +377,17 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
-      console.log($next.offset().top, self.$results.parent().scrollTop());
-      //self.$results.parents().scrollTop($next.offset().top);
+
+      var currentOffset = self.$results.offset().top +
+        self.$results.outerHeight(false);
+      var nextBottom = $next.offset().top + $next.outerHeight(false);
+      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextBottom > currentOffset) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     this.$results.on('mouseup', '.option[aria-selected]', function (evt) {
@@ -545,7 +564,7 @@ define('select2/selection/single',[
       // User exits the container
     });
 
-    this.$selection.on('keyup', function (evt) {
+    this.$selection.on('keydown', function (evt) {
       var key = evt.which;
 
       if (container.isOpen()) {
@@ -553,8 +572,12 @@ define('select2/selection/single',[
           self.trigger('results:select');
         } else if (key == KEYS.UP) {
           self.trigger('results:previous');
+
+          evt.preventDefault();
         } else if (key == KEYS.DOWN) {
           self.trigger('results:next');
+
+          evt.preventDefault();
         }
       } else {
         if (key == KEYS.ENTER || key == KEYS.SPACE) {
@@ -759,7 +782,7 @@ define('select2/data/base',[
   };
 
   BaseAdapter.prototype.generateResultId = function (data) {
-    var id = '';
+    var id = 'select2-result-';
 
     for (var i = 0; i < 4; i++) {
       var r = Math.floor(Math.random() * 16);
diff --git a/dist/js/select2.full.js b/dist/js/select2.full.js
index bc207836..68931b67 100644
--- a/dist/js/select2.full.js
+++ b/dist/js/select2.full.js
@@ -9886,6 +9886,16 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
+
+      var currentOffset = self.$results.offset().top;
+      var nextTop = $next.offset().top;
+      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextTop - currentOffset < 0) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     container.on('results:next', function () {
@@ -9905,8 +9915,17 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
-      console.log($next.offset().top, self.$results.parent().scrollTop());
-      //self.$results.parents().scrollTop($next.offset().top);
+
+      var currentOffset = self.$results.offset().top +
+        self.$results.outerHeight(false);
+      var nextBottom = $next.offset().top + $next.outerHeight(false);
+      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextBottom > currentOffset) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     this.$results.on('mouseup', '.option[aria-selected]', function (evt) {
@@ -10083,7 +10102,7 @@ define('select2/selection/single',[
       // User exits the container
     });
 
-    this.$selection.on('keyup', function (evt) {
+    this.$selection.on('keydown', function (evt) {
       var key = evt.which;
 
       if (container.isOpen()) {
@@ -10091,8 +10110,12 @@ define('select2/selection/single',[
           self.trigger('results:select');
         } else if (key == KEYS.UP) {
           self.trigger('results:previous');
+
+          evt.preventDefault();
         } else if (key == KEYS.DOWN) {
           self.trigger('results:next');
+
+          evt.preventDefault();
         }
       } else {
         if (key == KEYS.ENTER || key == KEYS.SPACE) {
@@ -10297,7 +10320,7 @@ define('select2/data/base',[
   };
 
   BaseAdapter.prototype.generateResultId = function (data) {
-    var id = '';
+    var id = 'select2-result-';
 
     for (var i = 0; i < 4; i++) {
       var r = Math.floor(Math.random() * 16);
diff --git a/dist/js/select2.full.min.js b/dist/js/select2.full.min.js
index 395f022b..00a5fa29 100644
--- a/dist/js/select2.full.min.js
+++ b/dist/js/select2.full.min.js
@@ -1,4 +1,4 @@
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d=Math.floor(16*Math.random());b+=d.toString(16)}return a.find(".rendered-selection").attr("id",b),a.attr("aria-labelledby",b),this.$selection=a,a},d.prototype.bind=function(a){var b=this;d.__super__.bind.apply(this,arguments),this.$selection.on("mousedown",function(a){1===a.which&&b.trigger("toggle",{originalEvent:a})}),a.on("open",function(){b.$selection.attr("aria-expanded","true")}),a.on("close",function(){b.$selection.attr("aria-expanded","false")}),this.$selection.on("focus",function(){}),this.$selection.on("blur",function(){}),this.$selection.on("keydown",function(d){var e=d.which;a.isOpen()?e==c.ENTER?b.trigger("results:select"):e==c.UP?(b.trigger("results:previous"),d.preventDefault()):e==c.DOWN&&(b.trigger("results:next"),d.preventDefault()):(e==c.ENTER||e==c.SPACE)&&b.trigger("open")}),a.on("selection:update",function(a){b.update(a.data)})},d.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},d.prototype.display=function(a){return a.text},d.prototype.selectionContainer=function(){return $("<span></span>")},d.prototype.update=function(a){if(0===a.length)return void this.clear();var b=a[0],c=this.display(b);this.$selection.find(".rendered-selection").html(c),null!=a[0]._resultId&&this.$selection.attr("aria-activedescendent",a[0]._resultId)},d}),define("select2/selection/multiple",["./base","../utils"],function(a,b){function c(a,b){this.$element=a,this.options=b,c.__super__.constructor.call(this)}return b.Extend(c,a),c.prototype.render=function(){var a=$('<span class="multiple-select"><ul class="rendered-selection"></ul></span>');return this.$selection=a,a},c.prototype.bind=function(){var a=this;c.__super__.bind.apply(this,arguments),this.$selection.on("click",function(b){a.trigger("toggle",{originalEvent:b})}),this.$selection.on("click",".remove",function(b){var c=$(this),d=c.parent(),e=d.data("data");a.trigger("unselected",{originalEvent:b,data:e})})},c.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},c.prototype.display=function(a){return a.text},c.prototype.selectionContainer=function(){var a=$('<li class="choice"><span class="remove" role="presentation">&times;</span></li>');return a},c.prototype.update=function(a){if(this.clear(),0!==a.length){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=this.display(d),f=this.selectionContainer();f.append(e),f.data("data",d),b.push(f)}this.$selection.find(".rendered-selection").append(b)}},c}),define("select2/selection/placeholder",["../utils"],function(){function a(a,b,c){this.placeholder=this.normalizePlaceholder(c.get("placeholder")),a.call(this,b,c)}return a.prototype.normalizePlaceholder=function(a,b){return"string"==typeof b&&(b={id:"",text:b}),b},a.prototype.update=function(a,b){var c=1==b.length&&b[0].id!=this.placeholder.id,d=b.length>1;if(d||c)return a.call(this,b);this.clear();var e=this.selectionContainer();e.html(this.display(this.placeholder)),e.addClass("placeholder").removeClass("choice"),this.$selection.find(".rendered-selection").append(e)},a}),define("select2/data/base",["../utils"],function(a){function b(){b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.current=function(){throw new Error("The `current` method must be defined in child classes.")},b.prototype.query=function(){throw new Error("The `query` method must be defined in child classes.")
+},b.prototype.bind=function(){},b.prototype.generateResultId=function(a){for(var b="select2-result-",c=0;4>c;c++){var d=Math.floor(16*Math.random());b+=d.toString(16)}if(null!=a.id)b+="-"+a.id.toString();else for(var e=0;4>e;e++){var f=Math.floor(16*Math.random());b+=f.toString(16)}return b},b}),define("select2/data/select",["./base","../utils","jquery"],function(a,b,c){function d(a){this.$element=a,d.__super__.constructor.call(this)}return b.Extend(d,a),d.prototype.current=function(a){var b=[],d=this;this.$element.find(":selected").each(function(){var a=c(this),e=d.item(a);b.push(e)}),a(b)},d.prototype.select=function(a){var b=this;if(this.$element.prop("multiple"))this.current(function(c){var d=[];a=[a],a.push.apply(a,c);for(var e=0;e<a.length;e++)id=a[e].id,-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")});else{var c=a.id;this.$element.val(c),this.$element.trigger("change")}},d.prototype.unselect=function(a){var b=this;this.$element.prop("multiple")&&this.current(function(c){for(var d=[],e=0;e<c.length;e++)id=c[e].id,id!==a.id&&-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")})},d.prototype.bind=function(a){var b=this;a.on("select",function(a){b.select(a.data)}),a.on("unselect",function(a){b.unselect(a.data)})},d.prototype.query=function(a,b){var d=[],e=this,f=this.$element.children();f.each(function(){var b=c(this);if(b.is("option")||b.is("optgroup")){var f=e.item(b),g=e.matches(a,f);null!==g&&d.push(g)}}),b(d)},d.prototype.item=function(a){var b=a.data("data");if(null==b){if(a.is("option"))b={id:a.val(),text:a.html(),disabled:a.prop("disabled")};else if(a.is("optgroup")){b={text:a.attr("label"),children:[]};for(var d=a.children("option"),e=[],f=0;f<d.length;f++){var g=c(d[f]),h=this.item(g);e.push(h)}b.children=e}b.id&&(b._resultId=this.generateResultId(b)),a.data("data",b)}return b},d.prototype.matches=function(a,b){var d=c.extend(!0,{},b);if(b.children){for(var e=b.children.length-1;e>=0;e--){var f=b.children[e],g=this.matches(a,f);null===g&&d.children.splice(e,1)}if(d.children.length>0)return d}return""===c.trim(a.term)?d:b.text.toUpperCase().indexOf(a.term.toUpperCase())>-1?d:null},d}),define("select2/data/array",["./select","../utils"],function(a,b){function c(a,b){this.data=b.options.data,c.__super__.constructor.call(this,a,b)}return b.Extend(c,a),c.prototype.select=function(a){var b=this;this.$element.find("option").each(function(){var c=$(this),d=b.item(c);d.id==a.id.toString()&&c.remove()});var d=this.option(a);this.$element.append(d),c.__super__.select.call(this,a)},c.prototype.option=function(a){var b=$("<option></option>");return b.text(a.text),b.val(a.id),b.data("data",a),b},c.prototype.query=function(a,b){var c=[],d=this;$.each(this.data,function(){var b=this;d.matches(a,b)&&c.push(b)}),b(c)},c}),define("select2/data/ajax",["./array","../utils","jquery"],function(a,b,c){function d(b,c){this.ajaxOptions=c.get("ajax"),this.processResults=this.ajaxOptions.processResults||function(a){return a},a.__super__.constructor.call(this,b,c)}return b.Extend(d,a),d.prototype.query=function(a,b){var d=this,e=c.extend({type:"GET"},this.ajaxOptions);"function"==typeof e.url&&(e.url=e.url(a)),"function"==typeof e.data&&(e.data=e.data(a));var f=c.ajax(e);f.success(function(a){var c=d.processResults(a);b(c)})},d}),define("select2/dropdown",["./utils"],function(a){function b(a){this.$element=a}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="dropdown"><span class="results"></span></span>');return a},b.prototype.bind=function(){},b}),define("select2/dropdown/search",[],function(){function a(){}return a.prototype.render=function(a){var b=a.call(this),c=$('<span class="search"><input type="search" name="search" tabindex="-1" role="textbox" /></span>');return this.$searchContainer=c,this.$search=c.find("input"),b.prepend(c),b},a.prototype.bind=function(a,b,c){var d=this;a.call(this,b,c),this.$search.on("keyup",function(){b.trigger("query",{term:$(this).val()})}),b.on("open",function(){d.$search.attr("tabindex",0)}),b.on("close",function(){d.$search.attr("tabindex",-1)}),b.on("results:all",function(a){if(null==a.query.term||""===a.query.term){var b=d.showSearch(a);b?d.$searchContainer.show():d.$searchContainer.hide()}})},a.prototype.showSearch=function(){return!0},a}),define("select2/defaults",["./results","./selection/single","./selection/multiple","./selection/placeholder","./utils","./data/select","./data/array","./data/ajax","./dropdown","./dropdown/search"],function(a,b,c,d,e,f,g,h,i,j){function k(){this.reset()}k.prototype.apply=function(k){if(k=$.extend({},k,this.defaults),null==k.dataAdapter&&(k.dataAdapter=k.ajax?h:k.data?g:f),null==k.resultsAdapter&&(k.resultsAdapter=a),null==k.dropdownAdapter){var l=e.Decorate(i,j);k.dropdownAdapter=l}return null==k.selectionAdapter&&(k.selectionAdapter=k.multiple?c:b,null!=k.placeholder&&(k.selectionAdapter=e.Decorate(k.selectionAdapter,d))),k},k.prototype.reset=function(){this.defaults={}};var l=new k;return l}),define("select2/options",["./defaults"],function(a){function b(b){this.options=a.apply(b)}return b.prototype.fromElement=function(){return this},b.prototype.get=function(a){return this.options[a]},b.prototype.set=function(a,b){this.options[a]=b},b}),define("select2/core",["jquery","./options","./utils"],function(a,b,c){var d=function(a,c){this.$element=a,c=c||{},c.multiple=c.multiple||a.prop("multiple"),this.options=new b(c),d.__super__.constructor.call(this);var e=this.options.get("dataAdapter");this.data=new e(a,this.options);var f=this.render();this.$container=f,f.insertAfter(this.$element),f.width(a.outerWidth(!1));var g=this.options.get("selectionAdapter");this.selection=new g(a,this.options);var h=f.find(".selection"),i=this.selection.render();h.append(i);var j=this.options.get("dropdownAdapter");this.dropdown=new j(a,this.options);var k=f.find(".dropdown-wrapper"),l=this.dropdown.render();k.append(l);var m=this.options.get("resultsAdapter");this.results=new m(a,this.options,this.data);var n=l.find(".results"),o=this.results.render();n.append(o);var p=this;this.data.bind(this,f),this.selection.bind(this,f),this.dropdown.bind(this,f),this.results.bind(this,f),this.$element.on("change",function(){p.data.current(function(a){p.trigger("selection:update",{data:a})})}),this.selection.on("open",function(){p.trigger("open")}),this.selection.on("close",function(){p.trigger("close")}),this.selection.on("toggle",function(){p.toggleDropdown()}),this.selection.on("results:select",function(){p.trigger("results:select")}),this.selection.on("results:previous",function(){p.trigger("results:previous")}),this.selection.on("results:next",function(){p.trigger("results:next")}),this.selection.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.results.on("selected",function(a){p.trigger("select",a),p.trigger("close")}),this.results.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.on("open",function(){f.addClass("open")}),this.on("close",function(){f.removeClass("open")}),this.data.current(function(a){p.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){p.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide(),a.attr("tabindex","-1")};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.isOpen()?"close":"open")},d.prototype.isOpen=function(){return this.$container.hasClass("open")},d.prototype.render=function(){var b=a('<span class="select2 select2-container select2-theme-default"><span class="selection"></span><span class="dropdown-wrapper"></span></span>');return b},d}),define("jquery.select2",["jquery","select2/core"],function(a,b){return null==a.fn.select2&&(a.fn.select2=function(c){if(c=c||{},"object"==typeof c)this.each(function(){new b(a(this),c)});else{if("string"!=typeof c)throw new Error("Invalid arguments for Select2: "+c);var d=this.data("select2");d[c](arguments.slice(1))}}),b}),require("jquery.select2");
\ No newline at end of file
diff --git a/dist/js/select2.js b/dist/js/select2.js
index e895ff12..9997278b 100644
--- a/dist/js/select2.js
+++ b/dist/js/select2.js
@@ -777,6 +777,16 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
+
+      var currentOffset = self.$results.offset().top;
+      var nextTop = $next.offset().top;
+      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextTop - currentOffset < 0) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     container.on('results:next', function () {
@@ -796,8 +806,17 @@ define('select2/results',[
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
-      console.log($next.offset().top, self.$results.parent().scrollTop());
-      //self.$results.parents().scrollTop($next.offset().top);
+
+      var currentOffset = self.$results.offset().top +
+        self.$results.outerHeight(false);
+      var nextBottom = $next.offset().top + $next.outerHeight(false);
+      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextBottom > currentOffset) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     this.$results.on('mouseup', '.option[aria-selected]', function (evt) {
@@ -974,7 +993,7 @@ define('select2/selection/single',[
       // User exits the container
     });
 
-    this.$selection.on('keyup', function (evt) {
+    this.$selection.on('keydown', function (evt) {
       var key = evt.which;
 
       if (container.isOpen()) {
@@ -982,8 +1001,12 @@ define('select2/selection/single',[
           self.trigger('results:select');
         } else if (key == KEYS.UP) {
           self.trigger('results:previous');
+
+          evt.preventDefault();
         } else if (key == KEYS.DOWN) {
           self.trigger('results:next');
+
+          evt.preventDefault();
         }
       } else {
         if (key == KEYS.ENTER || key == KEYS.SPACE) {
@@ -1188,7 +1211,7 @@ define('select2/data/base',[
   };
 
   BaseAdapter.prototype.generateResultId = function (data) {
-    var id = '';
+    var id = 'select2-result-';
 
     for (var i = 0; i < 4; i++) {
       var r = Math.floor(Math.random() * 16);
diff --git a/dist/js/select2.min.js b/dist/js/select2.min.js
index 75c95957..259ea3f5 100644
--- a/dist/js/select2.min.js
+++ b/dist/js/select2.min.js
@@ -1 +1 @@
-var requirejs,require,define;!function(a){function b(a,b){return r.call(a,b)}function c(a,b){var c,d,e,f,g,h,i,j,k,l,m,n=b&&b.split("/"),o=p.map,q=o&&o["*"]||{};if(a&&"."===a.charAt(0))if(b){for(n=n.slice(0,n.length-1),a=a.split("/"),g=a.length-1,p.nodeIdCompat&&t.test(a[g])&&(a[g]=a[g].replace(t,"")),a=n.concat(a),k=0;k<a.length;k+=1)if(m=a[k],"."===m)a.splice(k,1),k-=1;else if(".."===m){if(1===k&&(".."===a[2]||".."===a[0]))break;k>0&&(a.splice(k-1,2),k-=2)}a=a.join("/")}else 0===a.indexOf("./")&&(a=a.substring(2));if((n||q)&&o){for(c=a.split("/"),k=c.length;k>0;k-=1){if(d=c.slice(0,k).join("/"),n)for(l=n.length;l>0;l-=1)if(e=o[n.slice(0,l).join("/")],e&&(e=e[d])){f=e,h=k;break}if(f)break;!i&&q&&q[d]&&(i=q[d],j=k)}!f&&i&&(f=i,h=j),f&&(c.splice(0,h,f),a=c.join("/"))}return a}function d(b,c){return function(){return k.apply(a,s.call(arguments,0).concat([b,c]))}}function e(a){return function(b){return c(b,a)}}function f(a){return function(b){n[a]=b}}function g(c){if(b(o,c)){var d=o[c];delete o[c],q[c]=!0,j.apply(a,d)}if(!b(n,c)&&!b(q,c))throw new Error("No "+c);return n[c]}function h(a){var b,c=a?a.indexOf("!"):-1;return c>-1&&(b=a.substring(0,c),a=a.substring(c+1,a.length)),[b,a]}function i(a){return function(){return p&&p.config&&p.config[a]||{}}}var j,k,l,m,n={},o={},p={},q={},r=Object.prototype.hasOwnProperty,s=[].slice,t=/\.js$/;l=function(a,b){var d,f=h(a),i=f[0];return a=f[1],i&&(i=c(i,b),d=g(i)),i?a=d&&d.normalize?d.normalize(a,e(b)):c(a,b):(a=c(a,b),f=h(a),i=f[0],a=f[1],i&&(d=g(i))),{f:i?i+"!"+a:a,n:a,pr:i,p:d}},m={require:function(a){return d(a)},exports:function(a){var b=n[a];return"undefined"!=typeof b?b:n[a]={}},module:function(a){return{id:a,uri:"",exports:n[a],config:i(a)}}},j=function(c,e,h,i){var j,k,p,r,s,t,u=[],v=typeof h;if(i=i||c,"undefined"===v||"function"===v){for(e=!e.length&&h.length?["require","exports","module"]:e,s=0;s<e.length;s+=1)if(r=l(e[s],i),k=r.f,"require"===k)u[s]=m.require(c);else if("exports"===k)u[s]=m.exports(c),t=!0;else if("module"===k)j=u[s]=m.module(c);else if(b(n,k)||b(o,k)||b(q,k))u[s]=g(k);else{if(!r.p)throw new Error(c+" missing "+k);r.p.load(r.n,d(i,!0),f(k),{}),u[s]=n[k]}p=h?h.apply(n[c],u):void 0,c&&(j&&j.exports!==a&&j.exports!==n[c]?n[c]=j.exports:p===a&&t||(n[c]=p))}else c&&(n[c]=h)},requirejs=require=k=function(b,c,d,e,f){if("string"==typeof b)return m[b]?m[b](c):g(l(b,c).f);if(!b.splice){if(p=b,p.deps&&k(p.deps,p.callback),!c)return;c.splice?(b=c,c=d,d=null):b=a}return c=c||function(){},"function"==typeof d&&(d=e,e=f),e?j(a,b,c,d):setTimeout(function(){j(a,b,c,d)},4),k},k.config=function(a){return k(a)},requirejs._defined=n,define=function(a,c,d){c.splice||(d=c,c=[]),b(n,a)||b(o,a)||(o[a]=[a,c,d])},define.amd={jQuery:!0}}(),define("almond",function(){}),define("jquery",[],function(){return jQuery}),define("select2/utils",[],function(){function a(a){var b=a.prototype,c=[];for(var d in b){var e=b[d];"function"==typeof e&&c.push(d)}return c}var 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b={};b.Extend=function(a,b){function c(){this.constructor=a}var d={}.hasOwnProperty;for(var e in b)d.call(b,e)&&(a[e]=b[e]);return c.prototype=b.prototype,a.prototype=new c,a.__super__=b.prototype,a},b.Decorate=function(b,c){function d(){var a=Array.prototype.unshift,d=c.prototype.constructor.length,e=b.prototype.constructor;d>0&&(a.call(arguments,b.prototype.constructor),e=c.prototype.constructor),e.apply(this,arguments)}function e(){this.constructor=d}var f=a(c),g=a(b);c.displayName=b.displayName,d.prototype=new e;for(var h=0;h<g.length;h++){var i=g[h];d.prototype[i]=b.prototype[i]}for(var j=(function(a){var b=function(){};a in d.prototype&&(b=d.prototype[a]);var e=c.prototype[a];return function(){var a=Array.prototype.unshift;return a.call(arguments,b),e.apply(this,arguments)}}),k=0;k<f.length;k++){var l=f[k];d.prototype[l]=j(l)}return d};var c=function(){this.listeners={}};return c.prototype.on=function(a,b){a in this.listeners?this.listeners[a].push(b):this.listeners[a]=[b]},c.prototype.trigger=function(a){var b=Array.prototype.slice;a in this.listeners&&this.invoke(this.listeners[a],b.call(arguments,1)),"*"in this.listeners&&this.invoke(this.listeners["*"],arguments)},c.prototype.invoke=function(a,b){for(var c=0,d=a.length;d>c;c++)a[c].apply(this,b)},b.Observable=c,b}),define("select2/results",["./utils"],function(a){function b(a,c,d){this.$element=a,this.data=d,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<ul class="options" role="listbox"></ul>');return this.$results=a,a},b.prototype.clear=function(){this.$results.empty()},b.prototype.append=function(a){var b=[];a=this.sort(a);for(var c=0;c<a.length;c++){var d=a[c],e=this.option(d);b.push(e)}this.$results.append(b)},b.prototype.sort=function(a){return a},b.prototype.setClasses=function(){var a=this;this.data.current(function(b){var c=$.map(b,function(a){return a.id.toString()}),d=a.$results.find(".option[aria-selected]");d.each(function(){var a=$(this),b=a.data("data");null!=b.id&&c.indexOf(b.id.toString())>-1?a.attr("aria-selected","true"):a.attr("aria-selected","false")});var e=d.filter("[aria-selected=true]");e.length>0?e.first().trigger("mouseenter"):d.first().trigger("mouseenter")})},b.prototype.option=function(a){var b=$('<li class="option" role="option" aria-selected="false"></li>');if(a.children){b.addClass("group").removeAttr("aria-selected");var c=$('<strong class="group-label"></strong>');c.html(a.text);for(var d=[],e=0;e<a.children.length;e++){var f=a.children[e],g=this.option(f);d.push(g)}var h=$('<ul class="options nested-options"></ul>');h.append(d),b.append(c),b.append(h)}else b.html(a.text);return a.disabled&&b.removeAttr("aria-selected").attr("aria-disabled","true"),null==a.id&&b.removeAttr("aria-selected"),null!=a._resultId&&b.attr("id",a._resultId),b.data("data",a),b},b.prototype.bind=function(a){var b=this;a.on("results:all",function(a){b.clear(),b.append(a.data),b.setClasses()}),a.on("results:append",function(a){b.append(a.data),b.setClasses()}),a.on("select",function(){b.setClasses()}),a.on("unselect",function(){b.setClasses()}),a.on("open",function(){b.$results.attr("aria-expanded","true"),b.setClasses()}),a.on("close",function(){b.$results.attr("aria-expanded","false")}),a.on("results:select",function(){var a=b.$results.find(".highlighted");if(0!==a.length){var c=a.data("data");"true"==a.attr("aria-selected")?b.trigger("unselected",{data:c}):b.trigger("selected",{data:c})}}),a.on("results:previous",function(){var a=b.$results.find(".highlighted"),c=b.$results.find("[aria-selected]"),d=c.index(a);if(0!==d){var e=d-1;0===a.length&&(e=0);var f=c.eq(e);f.trigger("mouseenter")}}),a.on("results:next",function(){var a=b.$results.find(".highlighted"),c=b.$results.find("[aria-selected]"),d=c.index(a),e=d+1;if(!(e>=c.length)){var f=c.eq(e);f.trigger("mouseenter");var g=b.$results.offset().top,h=f.offset().top;console.log(g,b.$results.height(),h,f),0===e?b.$results.scrollTop(0):h>g&&b.$results.scrollTop(h)}}),this.$results.on("mouseup",".option[aria-selected]",function(a){var c=$(this),d=c.data("data");return"true"===c.attr("aria-selected")?void b.trigger("unselected",{originalEvent:a,data:d}):void b.trigger("selected",{originalEvent:a,data:d})}),this.$results.on("mouseenter",".option[aria-selected]",function(){b.$results.find(".option.highlighted").removeClass("highlighted"),$(this).addClass("highlighted")}),this.$results.on("mouseleave",".option",function(){$(this).removeClass("highlighted")})},b}),define("select2/selection/base",["../utils"],function(a){function b(a,c){this.$element=a,this.options=c,b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.render=function(){throw new Error("The `render` method must be defined in child classes.")},b.prototype.bind=function(a){var b=this;a.on("selection:update",function(a){b.update(a.data)})},b.prototype.update=function(){throw new Error("The `update` method must be defined in child classes.")},b}),define("select2/keys",[],function(){var a={BACKSPACE:8,TAB:9,ENTER:13,SHIFT:16,CTRL:17,ALT:18,ESC:27,SPACE:32,PAGE_UP:33,PAGE_DOWN:34,END:35,HOME:36,LEFT:37,UP:38,RIGHT:39,DOWN:40,DELETE:46,isArrow:function(a){switch(a=a.which?a.which:a){case KEY.LEFT:case KEY.RIGHT:case KEY.UP:case KEY.DOWN:return!0}return!1}};return a}),define("select2/selection/single",["./base","../utils","../keys"],function(a,b,c){function d(){d.__super__.constructor.apply(this,arguments)}return b.Extend(d,a),d.prototype.render=function(){var a=$('<span class="single-select" tabindex="0" role="combobox" aria-autocomplete="list" aria-haspopup="true" aria-expanded="false"><span class="rendered-selection"></span></span>');a.attr("title",this.$element.attr("title"));for(var b="select2-container-",c=0;4>c;c++){var d=Math.floor(16*Math.random());b+=d.toString(16)}return a.find(".rendered-selection").attr("id",b),a.attr("aria-labelledby",b),this.$selection=a,a},d.prototype.bind=function(a){var b=this;d.__super__.bind.apply(this,arguments),this.$selection.on("mousedown",function(a){1===a.which&&b.trigger("toggle",{originalEvent:a})}),a.on("open",function(){b.$selection.attr("aria-expanded","true")}),a.on("close",function(){b.$selection.attr("aria-expanded","false")}),this.$selection.on("focus",function(){}),this.$selection.on("blur",function(){}),this.$selection.on("keydown",function(d){var e=d.which;a.isOpen()?e==c.ENTER?b.trigger("results:select"):e==c.UP?(b.trigger("results:previous"),d.preventDefault()):e==c.DOWN&&(b.trigger("results:next"),d.preventDefault()):(e==c.ENTER||e==c.SPACE)&&b.trigger("open")}),a.on("selection:update",function(a){b.update(a.data)})},d.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},d.prototype.display=function(a){return a.text},d.prototype.selectionContainer=function(){return $("<span></span>")},d.prototype.update=function(a){if(0===a.length)return void this.clear();var b=a[0],c=this.display(b);this.$selection.find(".rendered-selection").html(c),null!=a[0]._resultId&&this.$selection.attr("aria-activedescendent",a[0]._resultId)},d}),define("select2/selection/multiple",["./base","../utils"],function(a,b){function c(a,b){this.$element=a,this.options=b,c.__super__.constructor.call(this)}return b.Extend(c,a),c.prototype.render=function(){var a=$('<span class="multiple-select"><ul class="rendered-selection"></ul></span>');return this.$selection=a,a},c.prototype.bind=function(){var a=this;c.__super__.bind.apply(this,arguments),this.$selection.on("click",function(b){a.trigger("toggle",{originalEvent:b})}),this.$selection.on("click",".remove",function(b){var c=$(this),d=c.parent(),e=d.data("data");a.trigger("unselected",{originalEvent:b,data:e})})},c.prototype.clear=function(){this.$selection.find(".rendered-selection").empty()},c.prototype.display=function(a){return a.text},c.prototype.selectionContainer=function(){var a=$('<li class="choice"><span class="remove" role="presentation">&times;</span></li>');return a},c.prototype.update=function(a){if(this.clear(),0!==a.length){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=this.display(d),f=this.selectionContainer();f.append(e),f.data("data",d),b.push(f)}this.$selection.find(".rendered-selection").append(b)}},c}),define("select2/selection/placeholder",["../utils"],function(){function a(a,b,c){this.placeholder=this.normalizePlaceholder(c.get("placeholder")),a.call(this,b,c)}return a.prototype.normalizePlaceholder=function(a,b){return"string"==typeof b&&(b={id:"",text:b}),b},a.prototype.update=function(a,b){var c=1==b.length&&b[0].id!=this.placeholder.id,d=b.length>1;if(d||c)return a.call(this,b);this.clear();var e=this.selectionContainer();e.html(this.display(this.placeholder)),e.addClass("placeholder").removeClass("choice"),this.$selection.find(".rendered-selection").append(e)},a}),define("select2/data/base",["../utils"],function(a){function b(){b.__super__.constructor.call(this)}return a.Extend(b,a.Observable),b.prototype.current=function(){throw new Error("The `current` method must be defined in child classes.")},b.prototype.query=function(){throw new Error("The `query` method must be defined in child classes.")},b.prototype.bind=function(){},b.prototype.generateResultId=function(a){for(var b="select2-result-",c=0;4>c;c++){var d=Math.floor(16*Math.random());b+=d.toString(16)}if(null!=a.id)b+="-"+a.id.toString();else for(var e=0;4>e;e++){var f=Math.floor(16*Math.random());b+=f.toString(16)}return b},b}),define("select2/data/select",["./base","../utils","jquery"],function(a,b,c){function d(a){this.$element=a,d.__super__.constructor.call(this)}return b.Extend(d,a),d.prototype.current=function(a){var b=[],d=this;this.$element.find(":selected").each(function(){var a=c(this),e=d.item(a);b.push(e)}),a(b)},d.prototype.select=function(a){var b=this;if(this.$element.prop("multiple"))this.current(function(c){var d=[];a=[a],a.push.apply(a,c);for(var e=0;e<a.length;e++)id=a[e].id,-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")});else{var c=a.id;this.$element.val(c),this.$element.trigger("change")}},d.prototype.unselect=function(a){var b=this;this.$element.prop("multiple")&&this.current(function(c){for(var d=[],e=0;e<c.length;e++)id=c[e].id,id!==a.id&&-1===d.indexOf(id)&&d.push(id);b.$element.val(d),b.$element.trigger("change")})},d.prototype.bind=function(a){var b=this;a.on("select",function(a){b.select(a.data)}),a.on("unselect",function(a){b.unselect(a.data)})},d.prototype.query=function(a,b){var d=[],e=this,f=this.$element.children();f.each(function(){var b=c(this);if(b.is("option")||b.is("optgroup")){var f=e.item(b),g=e.matches(a,f);null!==g&&d.push(g)}}),b(d)},d.prototype.item=function(a){var b=a.data("data");if(null==b){if(a.is("option"))b={id:a.val(),text:a.html(),disabled:a.prop("disabled")};else if(a.is("optgroup")){b={text:a.attr("label"),children:[]};for(var d=a.children("option"),e=[],f=0;f<d.length;f++){var g=c(d[f]),h=this.item(g);e.push(h)}b.children=e}b.id&&(b._resultId=this.generateResultId(b)),a.data("data",b)}return b},d.prototype.matches=function(a,b){var d=c.extend(!0,{},b);if(b.children){for(var e=b.children.length-1;e>=0;e--){var f=b.children[e],g=this.matches(a,f);null===g&&d.children.splice(e,1)}if(d.children.length>0)return d}return""===c.trim(a.term)?d:b.text.toUpperCase().indexOf(a.term.toUpperCase())>-1?d:null},d}),define("select2/data/array",["./select","../utils"],function(a,b){function c(a,b){this.data=b.options.data,c.__super__.constructor.call(this,a,b)}return b.Extend(c,a),c.prototype.select=function(a){var b=this;this.$element.find("option").each(function(){var c=$(this),d=b.item(c);d.id==a.id.toString()&&c.remove()});var d=this.option(a);this.$element.append(d),c.__super__.select.call(this,a)},c.prototype.option=function(a){var b=$("<option></option>");return b.text(a.text),b.val(a.id),b.data("data",a),b},c.prototype.query=function(a,b){var c=[],d=this;$.each(this.data,function(){var b=this;d.matches(a,b)&&c.push(b)}),b(c)},c}),define("select2/data/ajax",["./array","../utils","jquery"],function(a,b,c){function d(b,c){this.ajaxOptions=c.get("ajax"),this.processResults=this.ajaxOptions.processResults||function(a){return a},a.__super__.constructor.call(this,b,c)}return b.Extend(d,a),d.prototype.query=function(a,b){var d=this,e=c.extend({type:"GET"},this.ajaxOptions);"function"==typeof e.url&&(e.url=e.url(a)),"function"==typeof e.data&&(e.data=e.data(a));var f=c.ajax(e);f.success(function(a){var c=d.processResults(a);b(c)})},d}),define("select2/dropdown",["./utils"],function(a){function b(a){this.$element=a}return a.Extend(b,a.Observable),b.prototype.render=function(){var a=$('<span class="dropdown"><span class="results"></span></span>');return a},b.prototype.bind=function(){},b}),define("select2/dropdown/search",[],function(){function a(){}return a.prototype.render=function(a){var b=a.call(this),c=$('<span class="search"><input type="search" name="search" tabindex="-1" role="textbox" /></span>');return this.$searchContainer=c,this.$search=c.find("input"),b.prepend(c),b},a.prototype.bind=function(a,b,c){var d=this;a.call(this,b,c),this.$search.on("keyup",function(){b.trigger("query",{term:$(this).val()})}),b.on("open",function(){d.$search.attr("tabindex",0)}),b.on("close",function(){d.$search.attr("tabindex",-1)}),b.on("results:all",function(a){if(null==a.query.term||""===a.query.term){var b=d.showSearch(a);b?d.$searchContainer.show():d.$searchContainer.hide()}})},a.prototype.showSearch=function(){return!0},a}),define("select2/defaults",["./results","./selection/single","./selection/multiple","./selection/placeholder","./utils","./data/select","./data/array","./data/ajax","./dropdown","./dropdown/search"],function(a,b,c,d,e,f,g,h,i,j){function k(){this.reset()}k.prototype.apply=function(k){if(k=$.extend({},k,this.defaults),null==k.dataAdapter&&(k.dataAdapter=k.ajax?h:k.data?g:f),null==k.resultsAdapter&&(k.resultsAdapter=a),null==k.dropdownAdapter){var l=e.Decorate(i,j);k.dropdownAdapter=l}return null==k.selectionAdapter&&(k.selectionAdapter=k.multiple?c:b,null!=k.placeholder&&(k.selectionAdapter=e.Decorate(k.selectionAdapter,d))),k},k.prototype.reset=function(){this.defaults={}};var l=new k;return l}),define("select2/options",["./defaults"],function(a){function b(b){this.options=a.apply(b)}return b.prototype.fromElement=function(){return this},b.prototype.get=function(a){return this.options[a]},b.prototype.set=function(a,b){this.options[a]=b},b}),define("select2/core",["jquery","./options","./utils"],function(a,b,c){var d=function(a,c){this.$element=a,c=c||{},c.multiple=c.multiple||a.prop("multiple"),this.options=new b(c),d.__super__.constructor.call(this);var e=this.options.get("dataAdapter");this.data=new e(a,this.options);var f=this.render();this.$container=f,f.insertAfter(this.$element),f.width(a.outerWidth(!1));var g=this.options.get("selectionAdapter");this.selection=new g(a,this.options);var h=f.find(".selection"),i=this.selection.render();h.append(i);var j=this.options.get("dropdownAdapter");this.dropdown=new j(a,this.options);var k=f.find(".dropdown-wrapper"),l=this.dropdown.render();k.append(l);var m=this.options.get("resultsAdapter");this.results=new m(a,this.options,this.data);var n=l.find(".results"),o=this.results.render();n.append(o);var p=this;this.data.bind(this,f),this.selection.bind(this,f),this.dropdown.bind(this,f),this.results.bind(this,f),this.$element.on("change",function(){p.data.current(function(a){p.trigger("selection:update",{data:a})})}),this.selection.on("open",function(){p.trigger("open")}),this.selection.on("close",function(){p.trigger("close")}),this.selection.on("toggle",function(){p.toggleDropdown()}),this.selection.on("results:select",function(){p.trigger("results:select")}),this.selection.on("results:previous",function(){p.trigger("results:previous")}),this.selection.on("results:next",function(){p.trigger("results:next")}),this.selection.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.results.on("selected",function(a){p.trigger("select",a),p.trigger("close")}),this.results.on("unselected",function(a){p.trigger("unselect",a),p.trigger("close")}),this.on("open",function(){f.addClass("open")}),this.on("close",function(){f.removeClass("open")}),this.data.current(function(a){p.trigger("selection:update",{data:a})}),this.on("query",function(a){this.data.query(a,function(b){p.trigger("results:all",{data:b,query:a})})}),this.trigger("query",{}),a.hide(),a.attr("tabindex","-1")};return c.Extend(d,c.Observable),d.prototype.toggleDropdown=function(){this.trigger(this.isOpen()?"close":"open")},d.prototype.isOpen=function(){return this.$container.hasClass("open")},d.prototype.render=function(){var b=a('<span class="select2 select2-container select2-theme-default"><span class="selection"></span><span class="dropdown-wrapper"></span></span>');return b},d}),define("jquery.select2",["jquery","select2/core"],function(a,b){return null==a.fn.select2&&(a.fn.select2=function(c){if(c=c||{},"object"==typeof c)this.each(function(){new b(a(this),c)});else{if("string"!=typeof c)throw new Error("Invalid arguments for Select2: "+c);var d=this.data("select2");d[c](arguments.slice(1))}}),b}),require("jquery.select2");
\ No newline at end of file
diff --git a/src/js/select2/data/base.js b/src/js/select2/data/base.js
index 53289262..680e841c 100644
--- a/src/js/select2/data/base.js
+++ b/src/js/select2/data/base.js
@@ -20,7 +20,7 @@ define([
   };
 
   BaseAdapter.prototype.generateResultId = function (data) {
-    var id = '';
+    var id = 'select2-result-';
 
     for (var i = 0; i < 4; i++) {
       var r = Math.floor(Math.random() * 16);
diff --git a/src/js/select2/results.js b/src/js/select2/results.js
index 7f5dd604..9d8c2736 100644
--- a/src/js/select2/results.js
+++ b/src/js/select2/results.js
@@ -209,6 +209,16 @@ define([
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
+
+      var currentOffset = self.$results.offset().top;
+      var nextTop = $next.offset().top;
+      var nextOffset = self.$results.scrollTop() + (nextTop - currentOffset);
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextTop - currentOffset < 0) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     container.on('results:next', function () {
@@ -228,8 +238,17 @@ define([
       var $next = $options.eq(nextIndex);
 
       $next.trigger('mouseenter');
-      console.log($next.offset().top, self.$results.parent().scrollTop());
-      //self.$results.parents().scrollTop($next.offset().top);
+
+      var currentOffset = self.$results.offset().top +
+        self.$results.outerHeight(false);
+      var nextBottom = $next.offset().top + $next.outerHeight(false);
+      var nextOffset = self.$results.scrollTop() + nextBottom - currentOffset;
+
+      if (nextIndex === 0) {
+        self.$results.scrollTop(0);
+      } else if (nextBottom > currentOffset) {
+        self.$results.scrollTop(nextOffset);
+      }
     });
 
     this.$results.on('mouseup', '.option[aria-selected]', function (evt) {
diff --git a/src/js/select2/selection/single.js b/src/js/select2/selection/single.js
index 82632a29..58a35769 100644
--- a/src/js/select2/selection/single.js
+++ b/src/js/select2/selection/single.js
@@ -68,7 +68,7 @@ define([
       // User exits the container
     });
 
-    this.$selection.on('keyup', function (evt) {
+    this.$selection.on('keydown', function (evt) {
       var key = evt.which;
 
       if (container.isOpen()) {
@@ -76,8 +76,12 @@ define([
           self.trigger('results:select');
         } else if (key == KEYS.UP) {
           self.trigger('results:previous');
+
+          evt.preventDefault();
         } else if (key == KEYS.DOWN) {
           self.trigger('results:next');
+
+          evt.preventDefault();
         }
       } else {
         if (key == KEYS.ENTER || key == KEYS.SPACE) {
diff --git a/src/scss/theme/default/layout.scss b/src/scss/theme/default/layout.scss
index 56e21a52..8d9bd0f4 100644
--- a/src/scss/theme/default/layout.scss
+++ b/src/scss/theme/default/layout.scss
@@ -78,8 +78,10 @@
     }
 
     .results {
-      max-height: 200px;
-      overflow-y: scroll;
+      &> .options {
+        max-height: 200px;
+        overflow-y: auto;
+      }
 
       .options {
         .option {