diff --git a/server/static/css/simulation.css b/server/static/css/simulation.css
index 45babb5..8f4041c 100644
--- a/server/static/css/simulation.css
+++ b/server/static/css/simulation.css
@@ -199,7 +199,7 @@ body {
 }
 
 #simulation_adjust_main table {
-    width: 90%;
+    width: 100%;
     height: 100%;
     color: white;
 }
@@ -213,7 +213,7 @@ body {
 }
 
 #simulation_adjust_main th:first-child {
-    width: 90%;
+    width: 80%;
 }
 
 .part {
@@ -245,10 +245,41 @@ body {
     width: 60%;
     background-color: gray;
     position: relative;
-    left: 42px;
+    left: 47px;
     top: 34px;
 }
 
+.adjust_part {
+    width: 100%;
+    overflow: hidden;
+    position: relative;
+    left: 0; top: 0;
+}
+
+.adjust_part output {
+    bottom: 72%;
+    width: 70px;
+}
+
+.adjust_part>* {
+    float: left;
+    margin: 0;
+}
+
+.left.arrow.icon, .right.arrow.icon {
+    display: block;
+    width: 15%;
+    margin: 3px 0 3px 0;
+}
+
+.left.arrow.icon:hover, .right.arrow.icon:hover {
+    color: #D95C5C;
+}
+
+.adjust_part>input {
+    width: 70%;
+}
+
 #Static_main {
     width: auto;
     height: 100%;
@@ -362,7 +393,6 @@ body {
 
 output {
     position: absolute;
-    opacity: 0.7;
     background-image: -moz-linear-gradient(top, #444444, #999999);
     background-image: -o-linear-gradient(top, #444444, #999999);
     background-image: -webkit-gradient(linear, left top, left bottom, from(#444444), to(#999999));
@@ -370,12 +400,13 @@ output {
     height: 30px;
     text-align: center;
     color: white;
-    border-radius: 10px;
+    border-radius: 2px;
     display:  none;
     bottom: 180%;
     left: 0;
     margin-left: -1%;
     z-index: 99999;
+    background:rgba(0, 0, 0, 0.2);
 }
 
 output:after {
@@ -383,7 +414,7 @@ output:after {
     position: absolute;
     width: 0;
     height: 0;
-    border-top: 10px solid #999999;
+    border-top: 10px solid rgba(0, 0, 0, 0.2);
     border-left: 5px solid transparent;
     border-right: 5px solid transparent;
     top: 100%;
diff --git a/server/static/js/input-range.js b/server/static/js/input-range.js
index ec356fd..95b4c2f 100644
--- a/server/static/js/input-range.js
+++ b/server/static/js/input-range.js
@@ -6,6 +6,8 @@ $(ShowOutput = function() {
     newPoint = (el.val() - el.attr("min")) / (el.attr("max") - el.attr("min"));
     if ($(this).parent().prop('id') == 'static_adjust_input') {
       offset = 15.5;
+    } else if ($(this).prop('name') == 'RIPS') {
+      offset = -2;
     } else {
       offset = 8;
     }
@@ -18,7 +20,11 @@ $(ShowOutput = function() {
         display: 'inline-block',
         left: newPlace,
         marginLeft: offset + "%"
-      })
-      .text(el.val());
+      });
+      if ($(this).prop('name') == 'RIPS') {
+        el.next("output").text(alphaList[parseInt(el.val())]);
+      } else {
+        el.next("output").text(el.val());
+      }
     });
 });
diff --git a/server/static/js/simulation-ctrl.js b/server/static/js/simulation-ctrl.js
index b0ebc7a..4733268 100644
--- a/server/static/js/simulation-ctrl.js
+++ b/server/static/js/simulation-ctrl.js
@@ -242,8 +242,13 @@ function SetCircuits () {
     var newLine = $(
       '<tr class="adjust_line">' +
         '<td class="main_parts"><div class="mid_line"></div></td>' +
-        '<td><input type="range" min="0" max="53" step="1" value="' +
-          recordAdjustValues[curCircuit]['circuitRBS'][curLogic][m] + '"/></td>' +
+        '<td class="adjust_part">' +
+          '<i class="left arrow icon"></i>' +
+          '<input name="RIPS" class="adjust_input" type="range" min="0" max="53" step="1" value="' +
+            recordAdjustValues[curCircuit]['circuitRBS'][curLogic][m] + '"/>' +
+            '<output for="RIPS"></output>' +
+          '<i class="right arrow icon"></i>' +
+        '</td>' +
       '</tr>'
     );
     for (var n = 0; n < allParts[m].length; ++n) {
@@ -270,6 +275,7 @@ function SetCircuits () {
     newLine.appendTo($('#simulation_adjust_main tbody'));
   }
   AdjustRBS();
+  SelectRBS();
 };
 
 /* Adjust RIPS. */
@@ -336,7 +342,23 @@ $(AdjustRBS = function() {
   });
 });
 
+$(SelectRBS = function() {
+  ShowOutput();
+  $('.left.arrow.icon').unbind('click').bind('click', function() {
+    var input = $(this).parent().find('input[type=range]');
+    if (input.val() > 0) {
+      input.val(parseInt(input.val()) -1).change().mouseup();
+    }
+  });
+  $('.right.arrow.icon').unbind('click').bind('click', function() {
+    var input = $(this).parent().find('input[type=range]');
+    if (input.val() < 53) {
+      input.val(parseInt(input.val()) +1).change().mouseup();
+    }
+  });
+});
+
 /* The first logic of the first circuit selected by default. */
 $(function() {
   $('#simulation_circuit .ui.dropdown.item:first-child').find('a.item:first-child').click();
-})
+});
diff --git a/server/static/js/simulation-data.js b/server/static/js/simulation-data.js
index 1e20e9a..0607707 100644
--- a/server/static/js/simulation-data.js
+++ b/server/static/js/simulation-data.js
@@ -119,6 +119,7 @@ $(function() {
 /* Get RIPS of current logic of current circuit. */
 $(function() {
   window.RBSList = [];
+  window.alphaList = [];
   $.ajax({
     url: '/biobrick/RBS',
     contentType: 'application/json',
@@ -127,6 +128,7 @@ $(function() {
     success: function(data) {
       for (var i = 0; i < data['result'].length; ++i) {
         RBSList.push(data['result'][i]['name']);
+        alphaList.push(data['result'][i]['alpha']);
       }
     },
     fail: function() {
@@ -193,6 +195,9 @@ function ShowData() {
   console.log('RBSList: ');
   console.log(RBSList);
 
+  console.log('alphaList: ');
+  console.log(alphaList);
+
   console.log('recordAdjustValues: ');
   console.log(recordAdjustValues);