diff --git a/Makefile b/Makefile
index 4499a57e7..a9cd2793f 100644
--- a/Makefile
+++ b/Makefile
@@ -88,7 +88,8 @@ browser-test:
 # To install gjslint, see:
 #
 # <http://code.google.com/closure/utilities/docs/linter_howto.html>
-SRC_DIRS := . utils worker web test
+SRC_DIRS := . utils worker web test examples/helloworld extensions/firefox \
+            extensions/firefox/components
 GJSLINT_FILES = $(foreach DIR,$(SRC_DIRS),$(wildcard $(DIR)/*.js))
 lint:
 	gjslint $(GJSLINT_FILES)
diff --git a/examples/helloworld/hello.js b/examples/helloworld/hello.js
index 953700ae8..9c653ca24 100644
--- a/examples/helloworld/hello.js
+++ b/examples/helloworld/hello.js
@@ -7,30 +7,7 @@
 
 'use strict';
 
-//
-// Ajax GET request, for binary files
-// (like jQuery's $.get(), but supports the binary type ArrayBuffer)
-//
-var ajaxGet = function(url, callback) {
-  var xhr = new XMLHttpRequest();
-  xhr.open('GET', url);
-  xhr.mozResponseType = xhr.responseType = 'arraybuffer';
-  xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
-  xhr.onreadystatechange = function() {
-    if (xhr.readyState === 4 && xhr.status === xhr.expected) {
-      var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
-                  xhr.responseArrayBuffer || xhr.response);
-
-      callback(data);
-    }
-  };
-  xhr.send(null);
-};
-
-//
-// This is where the fun happens
-//
-ajaxGet('helloworld.pdf', function ajaxGetHelloWorld(data) {
+getPdf('helloworld.pdf', function getPdfHelloWorld(data) {
   //
   // Instantiate PDFDoc with PDF data
   //
diff --git a/extensions/firefox/bootstrap.js b/extensions/firefox/bootstrap.js
index 8dc13275a..5384a05df 100644
--- a/extensions/firefox/bootstrap.js
+++ b/extensions/firefox/bootstrap.js
@@ -1,31 +1,36 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
 let Cc = Components.classes;
 let Ci = Components.interfaces;
 let Cm = Components.manager;
 let Cu = Components.utils;
 
-Cu.import("resource://gre/modules/Services.jsm");
+Cu.import('resource://gre/modules/Services.jsm');
 
 function log(str) {
-  dump(str + "\n");
-};
+  dump(str + '\n');
+}
 
 function startup(aData, aReason) {
-  let manifestPath = "chrome.manifest";
-  let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
+  let manifestPath = 'chrome.manifest';
+  let file = Cc['@mozilla.org/file/local;1'].createInstance(Ci.nsILocalFile);
   try {
     file.initWithPath(aData.installPath.path);
     file.append(manifestPath);
     Cm.QueryInterface(Ci.nsIComponentRegistrar).autoRegister(file);
-  } catch(e) {
+  } catch (e) {
     log(e);
   }
-};
+}
 
 function shutdown(aData, aReason) {
-};
+}
 
 function install(aData, aReason) {
-  let url = "chrome://pdf.js/content/web/viewer.html?file=%s";
-  Services.prefs.setCharPref("extensions.pdf.js.url", url);
-};
+  let url = 'chrome://pdf.js/content/web/viewer.html?file=%s';
+  Services.prefs.setCharPref('extensions.pdf.js.url', url);
+}
 
diff --git a/extensions/firefox/components/pdfContentHandler.js b/extensions/firefox/components/pdfContentHandler.js
index ab5ec9654..e4b6a2a55 100644
--- a/extensions/firefox/components/pdfContentHandler.js
+++ b/extensions/firefox/components/pdfContentHandler.js
@@ -1,31 +1,35 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+
+'use strict';
+
 const Cc = Components.classes;
 const Ci = Components.interfaces;
 const Cr = Components.results;
 const Cu = Components.utils;
 
-const PDF_CONTENT_TYPE = "application/pdf";
+const PDF_CONTENT_TYPE = 'application/pdf';
 
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
+Cu.import('resource://gre/modules/XPCOMUtils.jsm');
+Cu.import('resource://gre/modules/Services.jsm');
 
 function log(aMsg) {
-  let msg = "pdfContentHandler.js: " + (aMsg.join ? aMsg.join("") : aMsg);
-  Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService)
+  let msg = 'pdfContentHandler.js: ' + (aMsg.join ? aMsg.join('') : aMsg);
+  Cc['@mozilla.org/consoleservice;1'].getService(Ci.nsIConsoleService)
                                      .logStringMessage(msg);
-  dump(msg + "\n");
-};
+  dump(msg + '\n');
+}
 
 function fireEventTo(aName, aData, aWindow) {
   let window = aWindow.wrappedJSObject;
-  let evt = window.document.createEvent("CustomEvent");
-  evt.initCustomEvent("pdf" + aName, false, false, aData);
+  let evt = window.document.createEvent('CustomEvent');
+  evt.initCustomEvent('pdf' + aName, false, false, aData);
   window.document.dispatchEvent(evt);
-};
+}
 
 function loadDocument(aWindow, aDocumentUrl) {
-  let xhr = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"]
+  let xhr = Cc['@mozilla.org/xmlextras/xmlhttprequest;1']
               .createInstance(Ci.nsIXMLHttpRequest);
-
   xhr.onprogress = function updateProgress(evt) {
     if (evt.lengthComputable)
       fireEventTo(evt.type, evt.loaded / evt.total, aWindow);
@@ -47,15 +51,15 @@ function loadDocument(aWindow, aDocumentUrl) {
       view2.set(view);
 
       fireEventTo(evt.type, arrayBuffer, aWindow);
-    } catch(e) {
-      log("Error - " + e);
+    } catch (e) {
+      log('Error - ' + e);
     }
   };
 
-  xhr.open("GET", aDocumentUrl);
-  xhr.responseType = "arraybuffer";
+  xhr.open('GET', aDocumentUrl);
+  xhr.responseType = 'arraybuffer';
   xhr.send(null);
-};
+}
 
 let WebProgressListener = {
   init: function(aWindow, aUrl) {
@@ -73,11 +77,12 @@ let WebProgressListener = {
                               .getInterface(Ci.nsIWebProgress);
     try {
       webProgress.removeProgressListener(this);
-    } catch(e) {}
+    } catch (e) {}
     webProgress.addProgressListener(this, flags);
   },
 
-  onStateChange: function onStateChange(aWebProgress, aRequest, aStateFlags, aStatus) {
+  onStateChange: function onStateChange(aWebProgress, aRequest, aStateFlags,
+                                        aStatus) {
     const complete = Ci.nsIWebProgressListener.STATE_IS_WINDOW +
                      Ci.nsIWebProgressListener.STATE_STOP;
     if ((aStateFlags & complete) == complete && this._locationHasChanged) {
@@ -86,14 +91,17 @@ let WebProgressListener = {
     }
   },
 
-  onProgressChange: function onProgressChange(aWebProgress, aRequest, aCurSelf, aMaxSelf, aCurTotal, aMaxTotal) {
+  onProgressChange: function onProgressChange(aWebProgress, aRequest, aCurSelf,
+                                              aMaxSelf, aCurTotal, aMaxTotal) {
   },
 
-  onLocationChange: function onLocationChange(aWebProgress, aRequest, aLocationURI) {
+  onLocationChange: function onLocationChange(aWebProgress, aRequest,
+                                              aLocationURI) {
     this._locationHasChanged = true;
   },
 
-  onStatusChange: function onStatusChange(aWebProgress, aRequest, aStatus, aMessage) {
+  onStatusChange: function onStatusChange(aWebProgress, aRequest, aStatus,
+                                          aMessage) {
   },
 
   onSecurityChange: function onSecurityChange(aWebProgress, aRequest, aState) {
@@ -136,16 +144,16 @@ pdfContentHandler.prototype = {
     WebProgressListener.init(window, uri.spec);
 
     try {
-      let url = Services.prefs.getCharPref("extensions.pdf.js.url");
-      url = url.replace("%s", uri.spec);
+      let url = Services.prefs.getCharPref('extensions.pdf.js.url');
+      url = url.replace('%s', uri.spec);
       window.location = url;
-    } catch(e) {
-      log("Error retrieving the pdf.js base url - " + e);
+    } catch (e) {
+      log('Error retrieving the pdf.js base url - ' + e);
     }
   },
 
-  classID: Components.ID("{2278dfd0-b75c-11e0-8257-1ba3d93c9f1a}"),
-  QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentHandler]),
+  classID: Components.ID('{2278dfd0-b75c-11e0-8257-1ba3d93c9f1a}'),
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentHandler])
 };
 
 var NSGetFactory = XPCOMUtils.generateNSGetFactory([pdfContentHandler]);
diff --git a/pdf.js b/pdf.js
index 449fd9c16..a660118a9 100644
--- a/pdf.js
+++ b/pdf.js
@@ -112,6 +112,42 @@ function stringToPDFString(str) {
   return str2;
 }
 
+//
+// getPdf()
+// Convenience function to perform binary Ajax GET
+// Usage: getPdf('http://...', callback)
+//        getPdf({
+//                 url:String ,
+//                 [,progress:Function, error:Function]
+//               },
+//               callback)
+//
+function getPdf(arg, callback) {
+  var params = arg;
+  if (typeof arg === 'string')
+    params = { url: arg };
+
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', params.url);
+  xhr.mozResponseType = xhr.responseType = 'arraybuffer';
+  xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
+
+  if ('progress' in params)
+    xhr.onprogrss = params.progress || undefined;
+
+  if ('error' in params)
+    xhr.onerror = params.error || undefined;
+
+  xhr.onreadystatechange = function getPdfOnreadystatechange() {
+    if (xhr.readyState === 4 && xhr.status === xhr.expected) {
+      var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
+                  xhr.responseArrayBuffer || xhr.response);
+      callback(data);
+    }
+  };
+  xhr.send(null);
+}
+
 var Stream = (function streamStream() {
   function constructor(arrayBuffer, start, length, dict) {
     this.bytes = new Uint8Array(arrayBuffer);
@@ -172,7 +208,8 @@ var Stream = (function streamStream() {
     },
     makeSubStream: function stream_makeSubstream(start, length, dict) {
       return new Stream(this.bytes.buffer, start, length, dict);
-    }
+    },
+    isStream: true
   };
 
   return constructor;
@@ -3800,8 +3837,21 @@ var Catalog = (function catalogCatalog() {
 })();
 
 var PDFDoc = (function pdfDoc() {
-  function constructor(data) {
-    var stream = new Stream(data);
+  function constructor(arg, callback) {
+    // Stream argument
+    if (typeof arg.isStream !== 'undefined') {
+      init.call(this, arg);
+    }
+    // ArrayBuffer argument
+    else if (typeof arg.byteLength !== 'undefined') {
+      init.call(this, new Stream(arg));
+    }
+    else {
+      error('Unknown argument type');
+    }
+  }
+
+  function init(stream) {
     assertWellFormed(stream.length > 0, 'stream must have data');
     this.stream = stream;
     this.setup();
@@ -4936,7 +4986,7 @@ var CanvasGraphics = (function canvasGraphics() {
       if (IsDict(extGState) && extGState.has(dictName.name)) {
         var gsState = this.xref.fetchIfRef(extGState.get(dictName.name));
         var self = this;
-        gsState.forEach(function(key, value) {
+        gsState.forEach(function canvasGraphicsSetGStateForEach(key, value) {
           switch (key) {
             case 'Type':
               break;
diff --git a/test/driver.js b/test/driver.js
index 144b97589..7162af6f3 100644
--- a/test/driver.js
+++ b/test/driver.js
@@ -73,26 +73,16 @@ function nextTask() {
 
   log('Loading file "' + task.file + '"\n');
 
-  var r = new XMLHttpRequest();
-  r.open('GET', task.file);
-  r.mozResponseType = r.responseType = 'arraybuffer';
-  r.onreadystatechange = function nextTaskOnreadystatechange() {
+  getPdf(task.file, function nextTaskGetPdf(data) {
     var failure;
-    if (r.readyState == 4) {
-      var data = r.mozResponseArrayBuffer || r.mozResponse ||
-        r.responseArrayBuffer || r.response;
-
-      try {
-        task.pdfDoc = new PDFDoc(data);
-      } catch (e) {
-        failure = 'load PDF doc : ' + e.toString();
-      }
-
-      task.pageNum = 1;
-      nextPage(task, failure);
+    try {
+      task.pdfDoc = new PDFDoc(data);
+    } catch (e) {
+      failure = 'load PDF doc : ' + e.toString();
     }
-  };
-  r.send(null);
+    task.pageNum = 1;
+    nextPage(task, failure);
+  });
 }
 
 function isLastPage(task) {
diff --git a/web/viewer.js b/web/viewer.js
index 68071103b..da41c1d0b 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -107,26 +107,18 @@ var PDFView = {
 
     document.title = url;
 
-    var xhr = new XMLHttpRequest();
-    xhr.open('GET', url);
-    xhr.mozResponseType = xhr.responseType = 'arraybuffer';
-    xhr.expected = (document.URL.indexOf('file:') === 0) ? 0 : 200;
-    xhr.onprogress = function updateProgress(evt) {
-      if (evt.lengthComputable)
-        PDFView.progress(evt.loaded / evt.total);
-    };
-
-    xhr.onerror = PDFView.error;
-
-    xhr.onreadystatechange = function() {
-      if (xhr.readyState === 4 && xhr.status === xhr.expected) {
-        var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse ||
-                    xhr.responseArrayBuffer || xhr.response);
+    getPdf(
+      {
+        url: url,
+        progress: function getPdfProgress(evt) {
+          if (evt.lengthComputable)
+            PDFView.progress(evt.loaded / evt.total);
+        },
+        error: PDFView.error
+      },
+      function getPdfLoad(data) {
         PDFView.load(data, scale);
-      }
-    };
-
-    xhr.send(null);
+      });
   },
 
   navigateTo: function(dest) {