diff --git a/src/core/annotation.js b/src/core/annotation.js
index 725353e4f..6a4c61011 100644
--- a/src/core/annotation.js
+++ b/src/core/annotation.js
@@ -102,45 +102,8 @@ var Annotation = (function AnnotationClosure() {
       }
     }
 
-    // Some types of annotations have border style dict which has more
-    // info than the border array
-    if (dict.has('BS')) {
-      var borderStyle = dict.get('BS');
-      data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1;
-    } else {
-      var borderArray = dict.get('Border') || [0, 0, 1];
-      data.borderWidth = borderArray[2] || 0;
-
-      // TODO: implement proper support for annotations with line dash patterns.
-      var dashArray = borderArray[3];
-      if (data.borderWidth > 0 && dashArray) {
-        if (!isArray(dashArray)) {
-          // Ignore the border if dashArray is not actually an array,
-          // this is consistent with the behaviour in Adobe Reader.
-          data.borderWidth = 0;
-        } else {
-          var dashArrayLength = dashArray.length;
-          if (dashArrayLength > 0) {
-            // According to the PDF specification: the elements in a dashArray
-            // shall be numbers that are nonnegative and not all equal to zero.
-            var isInvalid = false;
-            var numPositive = 0;
-            for (var i = 0; i < dashArrayLength; i++) {
-              var validNumber = (+dashArray[i] >= 0);
-              if (!validNumber) {
-                isInvalid = true;
-                break;
-              } else if (dashArray[i] > 0) {
-                numPositive++;
-              }
-            }
-            if (isInvalid || numPositive === 0) {
-              data.borderWidth = 0;
-            }
-          }
-        }
-      }
-    }
+    this.borderStyle = data.borderStyle = new AnnotationBorderStyle();
+    this.setBorderStyle(dict);
 
     this.appearance = getDefaultAppearance(dict);
     data.hasAppearance = !!this.appearance;
diff --git a/src/display/annotation_helper.js b/src/display/annotation_helper.js
index a64ee35f7..215c7c281 100644
--- a/src/display/annotation_helper.js
+++ b/src/display/annotation_helper.js
@@ -14,7 +14,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-/* globals PDFJS, Util, AnnotationType */
+/* globals PDFJS, Util, AnnotationType, AnnotationBorderStyleType, warn,
+           CustomStyle */
 
 'use strict';
 
@@ -50,19 +51,64 @@ var AnnotationUtils = (function AnnotationUtilsClosure() {
     var width = item.rect[2] - item.rect[0];
     var height = item.rect[3] - item.rect[1];
 
-    var bWidth = item.borderWidth || 0;
-    if (bWidth) {
-      width = width - 2 * bWidth;
-      height = height - 2 * bWidth;
-      cstyle.borderWidth = bWidth + 'px';
-      var color = item.color;
-      if (drawBorder && color) {
-        cstyle.borderStyle = 'solid';
-        cstyle.borderColor = Util.makeCssRgb(Math.round(color[0] * 255),
-                                             Math.round(color[1] * 255),
-                                             Math.round(color[2] * 255));
+    // Border
+    if (item.borderStyle.width > 0) {
+      // Border width
+      container.style.borderWidth = item.borderStyle.width + 'px';
+      if (item.borderStyle.style !== AnnotationBorderStyleType.UNDERLINE) {
+        // Underline styles only have a bottom border, so we do not need
+        // to adjust for all borders. This yields a similar result as
+        // Adobe Acrobat/Reader.
+        width = width - 2 * item.borderStyle.width;
+        height = height - 2 * item.borderStyle.width;
+      }
+
+      // Horizontal and vertical border radius
+      var horizontalRadius = item.borderStyle.horizontalCornerRadius;
+      var verticalRadius = item.borderStyle.verticalCornerRadius;
+      if (horizontalRadius > 0 || verticalRadius > 0) {
+        var radius = horizontalRadius + 'px / ' + verticalRadius + 'px';
+        CustomStyle.setProp('borderRadius', container, radius);
+      }
+
+      // Border style
+      switch (item.borderStyle.style) {
+        case AnnotationBorderStyleType.SOLID:
+          container.style.borderStyle = 'solid';
+          break;
+
+        case AnnotationBorderStyleType.DASHED:
+          container.style.borderStyle = 'dashed';
+          break;
+
+        case AnnotationBorderStyleType.BEVELED:
+          warn('Unimplemented border style: beveled');
+          break;
+
+        case AnnotationBorderStyleType.INSET:
+          warn('Unimplemented border style: inset');
+          break;
+
+        case AnnotationBorderStyleType.UNDERLINE:
+          container.style.borderBottomStyle = 'solid';
+          break;
+
+        default:
+          break;
+      }
+
+      // Border color
+      if (item.color) {
+        container.style.borderColor =
+          Util.makeCssRgb(Math.round(item.color[0] * 255),
+                          Math.round(item.color[1] * 255),
+                          Math.round(item.color[2] * 255));
+      } else {
+        // Default color is black, but that's not obvious from the spec.
+        container.style.borderColor = 'rgb(0,0,0)';
       }
     }
+
     cstyle.width = width + 'px';
     cstyle.height = height + 'px';
     return container;