diff --git a/dist/scroll-up-bar.js b/dist/scroll-up-bar.js
index 3cc39b9..57606e6 100644
--- a/dist/scroll-up-bar.js
+++ b/dist/scroll-up-bar.js
@@ -10,9 +10,7 @@
       enterViewport: $.noop,
       fullyEnterViewport: $.noop,
       exitViewport: $.noop,
-      partiallyExitViewport: $.noop,
-      delay: 400,
-      speed: 200
+      partiallyExitViewport: $.noop
     }, options);
 
     function isFullyInViewport() {
@@ -33,95 +31,97 @@
     $.scrollupbar.isInViewport = isInViewport();
     $.scrollupbar.isFullyInViewport = isFullyInViewport();
 
-      $window.on('scroll.scrollupbar', function() {
-        var y = $window.scrollTop(),
-            barHeight = $bar.outerHeight();
-
-        // Ignore elastic scrolling.
-        if (y < 0 || y > ($document.height() - $window.height())) {
-          return;
-        }
-
-        // Cancel the event fired by the previous scroll.
-        if (timeout) {
-          clearTimeout(timeout);
+    $window.on('scroll.scrollupbar', function() {
+      var y = $window.scrollTop(),
+          barHeight = $bar.outerHeight();
+
+      // Ignore elastic scrolling.
+      if (y < 0 || y > ($document.height() - $window.height())) {
+        return;
+      }
+
+      // Cancel the event fired by the previous scroll.
+      if (timeout) {
+        clearTimeout(timeout);
+      }
+
+      if (y < lastY) { // Scrolling up
+        // If the bar is hidden, place it right above the top frame.
+        if (!$.scrollupbar.isInViewport && lastY - barHeight >= minY) {
+          $bar.css('top', lastY - barHeight);
+          $.scrollupbar.isInViewport = true;
+          options.enterViewport();
         }
 
-        if (y < lastY) { // Scrolling up
-          // If the bar is hidden, place it right above the top frame.
-          if (!$.scrollupbar.isInViewport && lastY - barHeight >= minY) {
-            $bar.css('top', lastY - barHeight);
-            $.scrollupbar.isInViewport = true;
-            options.enterViewport();
+        // Scrolls up bigger than the bar's height fixes the bar on top.
+        if (isFullyInViewport()) {
+          if (y >= minY) {
+            $bar.css({
+              'position': 'fixed',
+              'top': 0
+            });
+          } else {
+            $bar.css({
+              'position': 'absolute',
+              'top': initialPosTop
+            });
           }
 
-          // Scrolls up bigger than the bar's height fixes the bar on top.
-          if (isFullyInViewport()) {
-            if (y >= minY) {
-              $bar.css({
-                'position': 'fixed',
-                'top': 0
-              });
-            } else {
-              $bar.css({
-                'position': 'absolute',
-                'top': initialPosTop
-              });
-            }
-
-            if (!$.scrollupbar.isFullyInViewport) {
-              $.scrollupbar.isFullyInViewport = true;
-              options.fullyEnterViewport();
-            }
+          if (!$.scrollupbar.isFullyInViewport) {
+            $.scrollupbar.isFullyInViewport = true;
+            options.fullyEnterViewport();
           }
+        }
 
-          // Fire an event to reveal the entire bar after [options.delay]ms if the scroll
-          // wasn't big enough.
-          timeout = setTimeout(function() {
-            if (!$.scrollupbar.isFullyInViewport) {
-              $bar.css({
-                'position': 'fixed',
-                'top': $bar.offset().top - y
-              });
-
-              $bar.animate({'top': 0}, options.speed, function() {
-                $.scrollupbar.isFullyInViewport = true;
-                options.fullyEnterViewport();
-              });
-            }
-          }, options.delay);
-        } else if (y > lastY) { // Scrolling down
-          // Unfix the bar allowing it to scroll with the page.
-          if ($.scrollupbar.isFullyInViewport) {
+        // Fire an event to reveal the entire bar after 400ms if the scroll
+        // wasn't big enough.
+        timeout = setTimeout(function() {
+          if (!$.scrollupbar.isFullyInViewport) {
             $bar.css({
-              'transform': 'translate3d(0,0,0)', // Fix for iOS invisible element bug when changing position values while scrolling
-              'position': 'absolute',
-              'top': lastY > minY ? lastY : initialPosTop
+              'position': 'fixed',
+              'top': $bar.offset().top - y
             });
 
-            if (!isFullyInViewport()) {
-              $.scrollupbar.isFullyInViewport = false;
-              options.partiallyExitViewport();
-            }
+            $bar.animate({'top': 0}, 100, function() {
+              $.scrollupbar.isFullyInViewport = true;
+              options.fullyEnterViewport();
+            });
           }
-
-          if ($.scrollupbar.isInViewport && !isInViewport()) {
-            $.scrollupbar.isInViewport = false;
-            options.exitViewport();
+        }, 400);
+      } else if (y > lastY) { // Scrolling down
+        // Unfix the bar allowing it to scroll with the page.
+        if ($.scrollupbar.isFullyInViewport) {
+          $bar.css({
+            // translate3d fixes iOS invisible element bug when changing
+            // position values while scrolling.
+            'transform': 'translate3d(0, 0, 0)',
+            'position': 'absolute',
+            'top': lastY > minY ? lastY : initialPosTop
+          });
+
+          if (!isFullyInViewport()) {
+            $.scrollupbar.isFullyInViewport = false;
+            options.partiallyExitViewport();
           }
+        }
 
-          // Fire an event to hide the entire bar after [options.delay]ms if the scroll
-          // wasn't big enough.
-          timeout = setTimeout(function() {
-            if (isInViewport() && y - barHeight >= minY) {
-              $bar.animate({'top': y - barHeight}, options.speed, function() {
-                $.scrollupbar.isInViewport = false;
-                options.exitViewport();
-              });
-            }
-          }, options.delay);
+        if ($.scrollupbar.isInViewport && !isInViewport()) {
+          $.scrollupbar.isInViewport = false;
+          options.exitViewport();
         }
 
+        // Fire an event to hide the entire bar after 400ms if the scroll
+        // wasn't big enough.
+        timeout = setTimeout(function() {
+          if (isInViewport() && y - barHeight >= minY) {
+            $bar.animate({'top': y - barHeight}, 100, function() {
+              $.scrollupbar.isInViewport = false;
+              options.exitViewport();
+            });
+          }
+        }, 400);
+      }
+
       lastY = y;
     });
 
diff --git a/dist/scroll-up-bar.min.js b/dist/scroll-up-bar.min.js
index bea40d4..b04d87c 100644
--- a/dist/scroll-up-bar.min.js
+++ b/dist/scroll-up-bar.min.js
@@ -1,2 +1,2 @@
 /* scroll-up-bar v0.3.0 (https://github.com/eduardomb/scroll-up-bar) */
-!function(a){"use strict";var b;a.scrollupbar=function(c,d){function e(){return h.scrollTop()<=c.offset().top}function f(){return h.scrollTop()<c.offset().top+c.outerHeight()}d=a.extend({enterViewport:a.noop,fullyEnterViewport:a.noop,exitViewport:a.noop,partiallyExitViewport:a.noop,delay:400,speed:200},d);var g,h=a(window),i=a(document),j="fixed"==c.css("position")?0:c.offset().top,k=h.scrollTop(),l=c.position().top;return a.scrollupbar.isInViewport=f(),a.scrollupbar.isFullyInViewport=e(),h.on("scroll.scrollupbar",function(){var b=h.scrollTop(),m=c.outerHeight();b<0||b>i.height()-h.height()||(g&&clearTimeout(g),b<k?(!a.scrollupbar.isInViewport&&k-m>=j&&(c.css("top",k-m),a.scrollupbar.isInViewport=!0,d.enterViewport()),e()&&(b>=j?c.css({position:"fixed",top:0}):c.css({position:"absolute",top:l}),a.scrollupbar.isFullyInViewport||(a.scrollupbar.isFullyInViewport=!0,d.fullyEnterViewport())),g=setTimeout(function(){a.scrollupbar.isFullyInViewport||(c.css({position:"fixed",top:c.offset().top-b}),c.animate({top:0},d.speed,function(){a.scrollupbar.isFullyInViewport=!0,d.fullyEnterViewport()}))},d.delay)):b>k&&(a.scrollupbar.isFullyInViewport&&(c.css({transform:"translate3d(0,0,0)",position:"absolute",top:k>j?k:l}),e()||(a.scrollupbar.isFullyInViewport=!1,d.partiallyExitViewport())),a.scrollupbar.isInViewport&&!f()&&(a.scrollupbar.isInViewport=!1,d.exitViewport()),g=setTimeout(function(){f()&&b-m>=j&&c.animate({top:b-m},d.speed,function(){a.scrollupbar.isInViewport=!1,d.exitViewport()})},d.delay)),k=b)}),b=function(){h.off(".scrollupbar"),c.css({position:"absolute",top:l})},c},a.scrollupbar.destroy=function(){if(b)return b()},a.fn.scrollupbar=function(b){return a.scrollupbar(this,b)}}(jQuery);
\ No newline at end of file
+(function(e){"use strict";var t;e.scrollupbar=function(n,r){function i(){return o.scrollTop()<=n.offset().top}function s(){return o.scrollTop()<n.offset().top+n.outerHeight()}r=e.extend({enterViewport:e.noop,fullyEnterViewport:e.noop,exitViewport:e.noop,partiallyExitViewport:e.noop},r);var o=e(window),u=e(document),a=n.css("position")=="fixed"?0:n.offset().top,f=o.scrollTop(),l=n.position().top,c;return e.scrollupbar.isInViewport=s(),e.scrollupbar.isFullyInViewport=i(),o.on("scroll.scrollupbar",function(){var t=o.scrollTop(),h=n.outerHeight();if(t<0||t>u.height()-o.height())return;c&&clearTimeout(c),t<f?(!e.scrollupbar.isInViewport&&f-h>=a&&(n.css("top",f-h),e.scrollupbar.isInViewport=!0,r.enterViewport()),i()&&(t>=a?n.css({position:"fixed",top:0}):n.css({position:"absolute",top:l}),e.scrollupbar.isFullyInViewport||(e.scrollupbar.isFullyInViewport=!0,r.fullyEnterViewport())),c=setTimeout(function(){e.scrollupbar.isFullyInViewport||(n.css({position:"fixed",top:n.offset().top-t}),n.animate({top:0},100,function(){e.scrollupbar.isFullyInViewport=!0,r.fullyEnterViewport()}))},400)):t>f&&(e.scrollupbar.isFullyInViewport&&(n.css({transform:"translate3d(0, 0, 0)",position:"absolute",top:f>a?f:l}),i()||(e.scrollupbar.isFullyInViewport=!1,r.partiallyExitViewport())),e.scrollupbar.isInViewport&&!s()&&(e.scrollupbar.isInViewport=!1,r.exitViewport()),c=setTimeout(function(){s()&&t-h>=a&&n.animate({top:t-h},100,function(){e.scrollupbar.isInViewport=!1,r.exitViewport()})},400)),f=t}),t=function(){o.off(".scrollupbar"),n.css({position:"absolute",top:l})},n},e.scrollupbar.destroy=function(){if(t)return t()},e.fn.scrollupbar=function(t){return e.scrollupbar(this,t)}})(jQuery);
diff --git a/src/scroll-up-bar.js b/src/scroll-up-bar.js
index 04dfaea..4eef75f 100644
--- a/src/scroll-up-bar.js
+++ b/src/scroll-up-bar.js
@@ -9,9 +9,7 @@
       enterViewport: $.noop,
       fullyEnterViewport: $.noop,
       exitViewport: $.noop,
-      partiallyExitViewport: $.noop,
-      delay: 400,
-      speed: 200
+      partiallyExitViewport: $.noop
     }, options);
 
     function isFullyInViewport() {
@@ -32,95 +30,97 @@
     $.scrollupbar.isInViewport = isInViewport();
     $.scrollupbar.isFullyInViewport = isFullyInViewport();
 
-      $window.on('scroll.scrollupbar', function() {
-        var y = $window.scrollTop(),
-            barHeight = $bar.outerHeight();
-
-        // Ignore elastic scrolling.
-        if (y < 0 || y > ($document.height() - $window.height())) {
-          return;
-        }
-
-        // Cancel the event fired by the previous scroll.
-        if (timeout) {
-          clearTimeout(timeout);
+    $window.on('scroll.scrollupbar', function() {
+      var y = $window.scrollTop(),
+          barHeight = $bar.outerHeight();
+
+      // Ignore elastic scrolling.
+      if (y < 0 || y > ($document.height() - $window.height())) {
+        return;
+      }
+
+      // Cancel the event fired by the previous scroll.
+      if (timeout) {
+        clearTimeout(timeout);
+      }
+
+      if (y < lastY) { // Scrolling up
+        // If the bar is hidden, place it right above the top frame.
+        if (!$.scrollupbar.isInViewport && lastY - barHeight >= minY) {
+          $bar.css('top', lastY - barHeight);
+          $.scrollupbar.isInViewport = true;
+          options.enterViewport();
         }
 
-        if (y < lastY) { // Scrolling up
-          // If the bar is hidden, place it right above the top frame.
-          if (!$.scrollupbar.isInViewport && lastY - barHeight >= minY) {
-            $bar.css('top', lastY - barHeight);
-            $.scrollupbar.isInViewport = true;
-            options.enterViewport();
+        // Scrolls up bigger than the bar's height fixes the bar on top.
+        if (isFullyInViewport()) {
+          if (y >= minY) {
+            $bar.css({
+              'position': 'fixed',
+              'top': 0
+            });
+          } else {
+            $bar.css({
+              'position': 'absolute',
+              'top': initialPosTop
+            });
           }
 
-          // Scrolls up bigger than the bar's height fixes the bar on top.
-          if (isFullyInViewport()) {
-            if (y >= minY) {
-              $bar.css({
-                'position': 'fixed',
-                'top': 0
-              });
-            } else {
-              $bar.css({
-                'position': 'absolute',
-                'top': initialPosTop
-              });
-            }
-
-            if (!$.scrollupbar.isFullyInViewport) {
-              $.scrollupbar.isFullyInViewport = true;
-              options.fullyEnterViewport();
-            }
+          if (!$.scrollupbar.isFullyInViewport) {
+            $.scrollupbar.isFullyInViewport = true;
+            options.fullyEnterViewport();
           }
+        }
 
-          // Fire an event to reveal the entire bar after [options.delay]ms if the scroll
-          // wasn't big enough.
-          timeout = setTimeout(function() {
-            if (!$.scrollupbar.isFullyInViewport) {
-              $bar.css({
-                'position': 'fixed',
-                'top': $bar.offset().top - y
-              });
-
-              $bar.animate({'top': 0}, options.speed, function() {
-                $.scrollupbar.isFullyInViewport = true;
-                options.fullyEnterViewport();
-              });
-            }
-          }, options.delay);
-        } else if (y > lastY) { // Scrolling down
-          // Unfix the bar allowing it to scroll with the page.
-          if ($.scrollupbar.isFullyInViewport) {
+        // Fire an event to reveal the entire bar after 400ms if the scroll
+        // wasn't big enough.
+        timeout = setTimeout(function() {
+          if (!$.scrollupbar.isFullyInViewport) {
             $bar.css({
-              'transform': 'translate3d(0,0,0)', // Fix for iOS invisible element bug when changing position values while scrolling
-              'position': 'absolute',
-              'top': lastY > minY ? lastY : initialPosTop
+              'position': 'fixed',
+              'top': $bar.offset().top - y
             });
 
-            if (!isFullyInViewport()) {
-              $.scrollupbar.isFullyInViewport = false;
-              options.partiallyExitViewport();
-            }
+            $bar.animate({'top': 0}, 100, function() {
+              $.scrollupbar.isFullyInViewport = true;
+              options.fullyEnterViewport();
+            });
           }
-
-          if ($.scrollupbar.isInViewport && !isInViewport()) {
-            $.scrollupbar.isInViewport = false;
-            options.exitViewport();
+        }, 400);
+      } else if (y > lastY) { // Scrolling down
+        // Unfix the bar allowing it to scroll with the page.
+        if ($.scrollupbar.isFullyInViewport) {
+          $bar.css({
+            // translate3d fixes iOS invisible element bug when changing
+            // position values while scrolling.
+            'transform': 'translate3d(0, 0, 0)',
+            'position': 'absolute',
+            'top': lastY > minY ? lastY : initialPosTop
+          });
+
+          if (!isFullyInViewport()) {
+            $.scrollupbar.isFullyInViewport = false;
+            options.partiallyExitViewport();
           }
+        }
 
-          // Fire an event to hide the entire bar after [options.delay]ms if the scroll
-          // wasn't big enough.
-          timeout = setTimeout(function() {
-            if (isInViewport() && y - barHeight >= minY) {
-              $bar.animate({'top': y - barHeight}, options.speed, function() {
-                $.scrollupbar.isInViewport = false;
-                options.exitViewport();
-              });
-            }
-          }, options.delay);
+        if ($.scrollupbar.isInViewport && !isInViewport()) {
+          $.scrollupbar.isInViewport = false;
+          options.exitViewport();
         }
 
+        // Fire an event to hide the entire bar after 400ms if the scroll
+        // wasn't big enough.
+        timeout = setTimeout(function() {
+          if (isInViewport() && y - barHeight >= minY) {
+            $bar.animate({'top': y - barHeight}, 100, function() {
+              $.scrollupbar.isInViewport = false;
+              options.exitViewport();
+            });
+          }
+        }, 400);
+      }
+
       lastY = y;
     });