default_target.diff

diff --git a/src/display/api.js b/src/display/api.js
index 103285b..8b281d7 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -134,6 +134,15 @@ PDFJS.verbosity = (PDFJS.verbosity === undefined ?
                    PDFJS.VERBOSITY_LEVELS.warnings : PDFJS.verbosity);
 
 /**
+ * Default html target attribute used when links in PDFs do not define targets.
+ * Common values are "_blank" or "_top".
+ * Defaults to not generating the target attribute.
+ * @var {string}
+ */
+PDFJS.defaultLinkTarget = (PDFJS.defaultLinkTarget === undefined ?
+                            '' : PDFJS.defaultLinkTarget);
+
+/**
  * Document initialization / loading parameters object.
  *
  * @typedef {Object} DocumentInitParameters
diff --git a/src/shared/annotation.js b/src/shared/annotation.js
index ff46ab9..7fc9a7b 100644
--- a/src/shared/annotation.js
+++ b/src/shared/annotation.js
@@ -843,6 +843,10 @@ var LinkAnnotation = (function LinkAnnotationClosure() {
       var link = document.createElement('a');
       link.href = link.title = this.data.url || '';
 
+      if (!link.target && PDFJS.defaultLinkTarget) {
+        link.target = PDFJS.defaultLinkTarget;
+      }
+
       container.appendChild(link);
 
       return container;
diff --git a/web/viewer.js b/web/viewer.js
index 9c11985..20f8586 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -1806,6 +1806,10 @@ function webViewerInitialized() {
     PDFJS.verbosity = hashParams['verbosity'] | 0;
   }
 
+  if ('defaultLinkTarget' in hashParams) {
+    PDFJS.defaultLinkTarget = hashParams['defaultLinkTarget'] | '';
+  }
+
   if ('ignoreCurrentPositionOnZoom' in hashParams) {
     IGNORE_CURRENT_POSITION_ON_ZOOM =
       (hashParams['ignoreCurrentPositionOnZoom'] === 'true');