diff --git a/src/canvas.js b/src/canvas.js
index 85e82aaa5..cc6d50ded 100644
--- a/src/canvas.js
+++ b/src/canvas.js
@@ -1097,6 +1097,40 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
           }
         }
       }
+      function rescaleImage(pixels, widthScale, heightScale) {
+        var scaledWidth = Math.ceil(width / widthScale);
+        var scaledHeight = Math.ceil(height / heightScale);
+
+        var itemsSum = new Uint32Array(scaledWidth * scaledHeight * 4);
+        var itemsCount = new Uint32Array(scaledWidth * scaledHeight);
+        for (var i = 0, position = 0; i < height; i++) {
+          var lineOffset = (0 | (i / heightScale)) * scaledWidth;
+          for (var j = 0; j < width; j++) {
+            var countOffset = lineOffset + (0 | (j / widthScale));
+            var sumOffset = countOffset << 2;
+            itemsSum[sumOffset] += pixels[position];
+            itemsSum[sumOffset + 1] += pixels[position + 1];
+            itemsSum[sumOffset + 2] += pixels[position + 2];
+            itemsSum[sumOffset + 3] += pixels[position + 3];
+            itemsCount[countOffset]++;
+            position += 4;
+          }
+        }
+        var tmpCanvas = createScratchCanvas(scaledWidth, scaledHeight);
+        var tmpCtx = tmpCanvas.getContext('2d');
+        var imgData = tmpCtx.getImageData(0, 0, scaledWidth, scaledHeight);
+        pixels = imgData.data;
+        for (var i = 0, j = 0, ii = scaledWidth * scaledHeight; i < ii; i++) {
+          var count = itemsCount[i];
+          pixels[j] = itemsSum[j] / count;
+          pixels[j + 1] = itemsSum[j + 1] / count;
+          pixels[j + 2] = itemsSum[j + 2] / count;
+          pixels[j + 3] = itemsSum[j + 3] / count;
+          j += 4;
+        }
+        tmpCtx.putImageData(imgData, 0, 0);
+        return tmpCanvas;
+      }
 
       this.save();
 
@@ -1119,8 +1153,19 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
 
       applyStencilMask(pixels, inverseDecode);
 
-      tmpCtx.putImageData(imgData, 0, 0);
-      ctx.drawImage(tmpCanvas, 0, -h);
+      var currentTransform = ctx.mozCurrentTransformInverse;
+      var widthScale = Math.max(Math.abs(currentTransform[0]), 1);
+      var heightScale = Math.max(Math.abs(currentTransform[3]), 1);
+      if (widthScale >= 2 || heightScale >= 2) {
+        // canvas does not resize well large images to small -- using simple
+        // algorithm to perform pre-scaling
+        tmpCanvas = rescaleImage(imgData.data, widthScale, heightScale);
+        ctx.scale(widthScale, heightScale);
+        ctx.drawImage(tmpCanvas, 0, -h / heightScale);
+      } else {
+        tmpCtx.putImageData(imgData, 0, 0);
+        ctx.drawImage(tmpCanvas, 0, -h);
+      }
       this.restore();
     },
 
diff --git a/src/evaluator.js b/src/evaluator.js
index 8849a994a..059ff113f 100644
--- a/src/evaluator.js
+++ b/src/evaluator.js
@@ -226,8 +226,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         insertDependency([objId]);
         args = [objId, w, h];
 
-        var softMask = dict.get('SMask', 'IM') || false;
-        if (!softMask && image instanceof JpegStream &&
+        var softMask = dict.get('SMask', 'SM') || false;
+        var mask = dict.get('Mask') || false;
+
+        if (!softMask && !mask && image instanceof JpegStream &&
             image.isNativelySupported(xref, resources)) {
           // These JPEGs don't need any more processing so we can just send it.
           fn = 'paintJpegXObject';
diff --git a/src/fonts.js b/src/fonts.js
index 72bcecbce..f74ad4439 100644
--- a/src/fonts.js
+++ b/src/fonts.js
@@ -3104,9 +3104,13 @@ var Font = (function FontClosure() {
                  window.btoa(data) + ');');
       var rule = "@font-face { font-family:'" + fontName + "';src:" + url + '}';
 
-      var styleElement = document.createElement('style');
-      document.documentElement.getElementsByTagName('head')[0].appendChild(
-        styleElement);
+      var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG');
+      if (!styleElement) {
+          styleElement = document.createElement('style');
+          styleElement.id = 'PDFJS_FONT_STYLE_TAG';
+          document.documentElement.getElementsByTagName('head')[0].appendChild(
+            styleElement);
+      }
 
       var styleSheet = styleElement.sheet;
       styleSheet.insertRule(rule, styleSheet.cssRules.length);
diff --git a/src/image.js b/src/image.js
index c8c19f9e5..3495483e7 100644
--- a/src/image.js
+++ b/src/image.js
@@ -33,7 +33,7 @@ var PDFImage = (function PDFImageClosure() {
     // Clamp the value to the range
     return value < 0 ? 0 : value > max ? max : value;
   }
-  function PDFImage(xref, res, image, inline, smask) {
+  function PDFImage(xref, res, image, inline, smask, mask) {
     this.image = image;
     if (image.getParams) {
       // JPX/JPEG2000 streams directly contain bits per component
@@ -94,12 +94,10 @@ var PDFImage = (function PDFImageClosure() {
       }
     }
 
-    var mask = dict.get('Mask');
-
-    if (mask) {
-      TODO('masked images');
-    } else if (smask) {
+    if (smask) {
       this.smask = new PDFImage(xref, res, smask, false);
+    } else if (mask) {
+      this.mask = new PDFImage(xref, res, mask, false);
     }
   }
   /**
@@ -110,21 +108,36 @@ var PDFImage = (function PDFImageClosure() {
                                                      res, image, inline) {
     var imageDataPromise = new Promise();
     var smaskPromise = new Promise();
+    var maskPromise = new Promise();
     // The image data and smask data may not be ready yet, wait till both are
     // resolved.
-    Promise.all([imageDataPromise, smaskPromise]).then(function(results) {
-      var imageData = results[0], smaskData = results[1];
-      var image = new PDFImage(xref, res, imageData, inline, smaskData);
+    Promise.all([imageDataPromise, smaskPromise, maskPromise]).then(
+        function(results) {
+      var imageData = results[0], smaskData = results[1], maskData = results[2];
+      var image = new PDFImage(xref, res, imageData, inline, smaskData,
+                               maskData);
       callback(image);
     });
 
     handleImageData(handler, xref, res, image, imageDataPromise);
 
     var smask = image.dict.get('SMask');
-    if (smask)
+    var mask = image.dict.get('Mask');
+
+    if (smask) {
       handleImageData(handler, xref, res, smask, smaskPromise);
-    else
+      maskPromise.resolve(null);
+    } else {
       smaskPromise.resolve(null);
+      if (mask && isStream(mask)) {
+        handleImageData(handler, xref, res, mask, maskPromise);
+      } else if (mask) {
+        TODO('handle color key masking');
+        maskPromise.resolve(null);
+      } else {
+        maskPromise.resolve(null);
+      }
+    }
   };
 
   /**
@@ -268,6 +281,7 @@ var PDFImage = (function PDFImageClosure() {
     },
     getOpacity: function PDFImage_getOpacity(width, height) {
       var smask = this.smask;
+      var mask = this.mask;
       var originalWidth = this.width;
       var originalHeight = this.height;
       var buf;
@@ -278,7 +292,20 @@ var PDFImage = (function PDFImageClosure() {
         buf = new Uint8Array(sw * sh);
         smask.fillGrayBuffer(buf);
         if (sw != width || sh != height)
-          buf = PDFImage.resize(buf, smask.bps, 1, sw, sh, width, height);
+          buf = PDFImage.resize(buf, smask.bpc, 1, sw, sh, width, height);
+      } else if (mask) {
+        var sw = mask.width;
+        var sh = mask.height;
+        buf = new Uint8Array(sw * sh);
+        mask.numComps = 1;
+        mask.fillGrayBuffer(buf);
+
+        // Need to invert values in buffer
+        for (var i = 0, ii = sw * sh; i < ii; ++i)
+          buf[i] = 255 - buf[i];
+
+        if (sw != width || sh != height)
+          buf = PDFImage.resize(buf, mask.bpc, 1, sw, sh, width, height);
       } else {
         buf = new Uint8Array(width * height);
         for (var i = 0, ii = width * height; i < ii; ++i)
diff --git a/test/pdfs/issue1796.pdf.link b/test/pdfs/issue1796.pdf.link
new file mode 100644
index 000000000..b6470b421
--- /dev/null
+++ b/test/pdfs/issue1796.pdf.link
@@ -0,0 +1 @@
+http://www.maxims6n.bget.ru/book3/viewer/t4.pdf
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 25d2a2080..32bde988e 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -608,5 +608,13 @@
       "md5": "cbc1988e4803f647fa83467a85f0e231",
       "rounds": 1,
       "type": "eq"
+    },
+    {  "id": "issue1796",
+      "file": "pdfs/issue1796.pdf",
+      "md5": "9b9b60dc2a4cc3ea05932785d71304fe",
+      "rounds": 1,
+      "pageLimit": 2,
+      "link": true,
+      "type": "eq"
     }
 ]
diff --git a/web/viewer.css b/web/viewer.css
index 7c7d4f684..b8e86f2c8 100644
--- a/web/viewer.css
+++ b/web/viewer.css
@@ -11,7 +11,13 @@ body {
   height: 100%;
   background-color: #404040;
   background-image: url(images/texture.png);
-  font-family: Segoe UI, Verdana, sans-serif;
+}
+
+body,
+input,
+button,
+select {
+  font: message-box;
 }
 
 .hidden {
@@ -54,19 +60,31 @@ html[dir='rtl'] .innerCenter {
   bottom: 0;
   width: 200px;
   visibility: hidden;
-  -moz-transition-duration: 200ms;
-  -moz-transition-timing-function: ease;
   -webkit-transition-duration: 200ms;
   -webkit-transition-timing-function: ease;
+  -moz-transition-duration: 200ms;
+  -moz-transition-timing-function: ease;
+  -ms-transition-duration: 200ms;
+  -ms-transition-timing-function: ease;
+  -o-transition-duration: 200ms;
+  -o-transition-timing-function: ease;
+  transition-duration: 200ms;
+  transition-timing-function: ease;
+  
 }
 html[dir='ltr'] #sidebarContainer {
-  -moz-transition-property: left;
   -webkit-transition-property: left;
+  -moz-transition-property: left;
+  -ms-transition-property: left;
+  -o-transition-property: left;
+  transition-property: left;
   left: -200px;
 }
 html[dir='rtl'] #sidebarContainer {
-  -moz-transition-property: right;
   -webkit-transition-property: right;
+  -ms-transition-property: right;
+  -o-transition-property: right;
+  transition-property: right;
   right: -200px;
 }
 
@@ -87,19 +105,31 @@ html[dir='rtl'] #outerContainer.sidebarOpen > #sidebarContainer {
   right: 0;
   bottom: 0;
   left: 0;
-  -moz-transition-duration: 200ms;
-  -moz-transition-timing-function: ease;
   -webkit-transition-duration: 200ms;
   -webkit-transition-timing-function: ease;
+  -moz-transition-duration: 200ms;
+  -moz-transition-timing-function: ease;
+  -ms-transition-duration: 200ms;
+  -ms-transition-timing-function: ease;
+  -o-transition-duration: 200ms;
+  -o-transition-timing-function: ease;
+  transition-duration: 200ms;
+  transition-timing-function: ease;
 }
 html[dir='ltr'] #outerContainer.sidebarOpen > #mainContainer {
-  -moz-transition-property: left;
   -webkit-transition-property: left;
+  -moz-transition-property: left;
+  -ms-transition-property: left;
+  -o-transition-property: left;
+  transition-property: left;
   left: 200px;
 }
 html[dir='rtl'] #outerContainer.sidebarOpen > #mainContainer {
-  -moz-transition-property: right;
   -webkit-transition-property: right;
+  -moz-transition-property: right;
+  -ms-transition-property: right;
+  -o-transition-property: right;
+  transition-property: right;
   right: 200px;
 }
 
@@ -147,10 +177,16 @@ html[dir='rtl'] #sidebarContent {
 #toolbarSidebar {
   width: 200px;
   height: 29px;
+  background-image: url(images/texture.png),
+                    -webkit-linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
   background-image: url(images/texture.png),
                     -moz-linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
   background-image: url(images/texture.png),
-                    -webkit-linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
+                    -ms-linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
+  background-image: url(images/texture.png),
+                    -o-linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
+  background-image: url(images/texture.png),
+                    linear-gradient(hsla(0,0%,30%,.99), hsla(0,0%,25%,.95));
   box-shadow: inset -2px 0 0 hsla(0,0%,100%,.08),
               inset 0 1px 1px hsla(0,0%,0%,.15),
               inset 0 -1px 0 hsla(0,0%,100%,.05),
@@ -161,10 +197,16 @@ html[dir='rtl'] #sidebarContent {
 #toolbarViewer {
   position: relative;
   height: 32px;
+  background-image: url(images/texture.png),
+                    -webkit-linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
   background-image: url(images/texture.png),
                     -moz-linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
   background-image: url(images/texture.png),
-                    -webkit-linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
+                    -ms-linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
+  background-image: url(images/texture.png),
+                    -o-linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
+  background-image: url(images/texture.png),
+                    linear-gradient(hsla(0,0%,32%,.99), hsla(0,0%,27%,.95));
   border-left: 1px solid hsla(0,0%,0%,.5);
   box-shadow: inset 1px 0 0 hsla(0,0%,100%,.08),
               inset 0 1px 1px hsla(0,0%,0%,.15),
@@ -251,20 +293,33 @@ html[dir='rtl'] .splitToolbarButton > .toolbarButton {
 .splitToolbarButton.toggled > .toolbarButton,
 .toolbarButton.textButton {
   background-color: hsla(0,0%,0%,.12);
-  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-image: -webkit-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -ms-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -o-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-clip: padding-box;
   border: 1px solid hsla(0,0%,0%,.35);
   border-color: hsla(0,0%,0%,.32) hsla(0,0%,0%,.38) hsla(0,0%,0%,.42);
   box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
               0 0 1px hsla(0,0%,100%,.15) inset,
               0 1px 0 hsla(0,0%,100%,.05);
-  -moz-transition-property: background-color, border-color, box-shadow;
-  -moz-transition-duration: 150ms;
-  -moz-transition-timing-function: ease;
   -webkit-transition-property: background-color, border-color, box-shadow;
   -webkit-transition-duration: 150ms;
   -webkit-transition-timing-function: ease;
+  -moz-transition-property: background-color, border-color, box-shadow;
+  -moz-transition-duration: 150ms;
+  -moz-transition-timing-function: ease;
+  -ms-transition-property: background-color, border-color, box-shadow;
+  -ms-transition-duration: 150ms;
+  -ms-transition-timing-function: ease;
+  -o-transition-property: background-color, border-color, box-shadow;
+  -o-transition-duration: 150ms;
+  -o-transition-timing-function: ease;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+  transition-timing-function: ease;
+
 }
 .splitToolbarButton > .toolbarButton:hover,
 .splitToolbarButton > .toolbarButton:focus,
@@ -315,12 +370,21 @@ html[dir='rtl'] .splitToolbarButtonSeparator {
   padding: 12px 0;
   margin: 0;
   box-shadow: 0 0 0 1px hsla(0,0%,100%,.03);
-  -moz-transition-property: padding;
-  -moz-transition-duration: 10ms;
-  -moz-transition-timing-function: ease;
   -webkit-transition-property: padding;
   -webkit-transition-duration: 10ms;
   -webkit-transition-timing-function: ease;
+  -moz-transition-property: padding;
+  -moz-transition-duration: 10ms;
+  -moz-transition-timing-function: ease;
+  -ms-transition-property: padding;
+  -ms-transition-duration: 10ms;
+  -ms-transition-timing-function: ease;
+  -o-transition-property: padding;
+  -o-transition-duration: 10ms;
+  -o-transition-timing-function: ease;
+  transition-property: padding;
+  transition-duration: 10ms;
+  transition-timing-function: ease;
 }
 
 .toolbarButton,
@@ -332,15 +396,26 @@ html[dir='rtl'] .splitToolbarButtonSeparator {
   color: hsl(0,0%,95%);
   font-size: 12px;
   line-height: 14px;
-  -moz-user-select:none;
   -webkit-user-select:none;
+  -moz-user-select:none;
+  -ms-user-select:none;
+  /* Opera does not support user-select, use <... unselectable="on"> instead */
   cursor: default;
-  -moz-transition-property: background-color, border-color, box-shadow;
-  -moz-transition-duration: 150ms;
-  -moz-transition-timing-function: ease;
   -webkit-transition-property: background-color, border-color, box-shadow;
   -webkit-transition-duration: 150ms;
   -webkit-transition-timing-function: ease;
+  -moz-transition-property: background-color, border-color, box-shadow;
+  -moz-transition-duration: 150ms;
+  -moz-transition-timing-function: ease;
+  -ms-transition-property: background-color, border-color, box-shadow;
+  -ms-transition-duration: 150ms;
+  -ms-transition-timing-function: ease;
+  -o-transition-property: background-color, border-color, box-shadow;
+  -o-transition-duration: 150ms;
+  -o-transition-timing-function: ease;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 150ms;
+  transition-timing-function: ease;
 }
 
 html[dir='ltr'] .toolbarButton,
@@ -356,8 +431,11 @@ html[dir='rtl'] .dropdownToolbarButton {
 .toolbarButton:focus,
 .dropdownToolbarButton {
   background-color: hsla(0,0%,0%,.12);
-  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-image: -webkit-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -ms-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -o-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-clip: padding-box;
   border: 1px solid hsla(0,0%,0%,.35);
   border-color: hsla(0,0%,0%,.32) hsla(0,0%,0%,.38) hsla(0,0%,0%,.42);
@@ -369,35 +447,59 @@ html[dir='rtl'] .dropdownToolbarButton {
 .toolbarButton:hover:active,
 .dropdownToolbarButton:hover:active {
   background-color: hsla(0,0%,0%,.2);
-  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-image: -webkit-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -ms-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -o-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   border-color: hsla(0,0%,0%,.35) hsla(0,0%,0%,.4) hsla(0,0%,0%,.45);
   box-shadow: 0 1px 1px hsla(0,0%,0%,.1) inset,
               0 0 1px hsla(0,0%,0%,.2) inset,
               0 1px 0 hsla(0,0%,100%,.05);
-  -moz-transition-property: background-color, border-color, box-shadow;
-  -moz-transition-duration: 10ms;
-  -moz-transition-timing-function: linear;
   -webkit-transition-property: background-color, border-color, box-shadow;
   -webkit-transition-duration: 10ms;
   -webkit-transition-timing-function: linear;
+  -moz-transition-property: background-color, border-color, box-shadow;
+  -moz-transition-duration: 10ms;
+  -moz-transition-timing-function: linear;
+  -ms-transition-property: background-color, border-color, box-shadow;
+  -ms-transition-duration: 10ms;
+  -ms-transition-timing-function: linear;
+  -o-transition-property: background-color, border-color, box-shadow;
+  -o-transition-duration: 10ms;
+  -o-transition-timing-function: linear;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 10ms;
+  transition-timing-function: linear;
 }
 
 .toolbarButton.toggled,
 .splitToolbarButton.toggled > .toolbarButton.toggled {
   background-color: hsla(0,0%,0%,.3);
-  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   background-image: -webkit-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -moz-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -ms-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: -o-linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
+  background-image: linear-gradient(hsla(0,0%,100%,.05), hsla(0,0%,100%,0));
   border-color: hsla(0,0%,0%,.4) hsla(0,0%,0%,.45) hsla(0,0%,0%,.5);
   box-shadow: 0 1px 1px hsla(0,0%,0%,.1) inset,
               0 0 1px hsla(0,0%,0%,.2) inset,
               0 1px 0 hsla(0,0%,100%,.05);
-  -moz-transition-property: background-color, border-color, box-shadow;
-  -moz-transition-duration: 10ms;
-  -moz-transition-timing-function: linear;
   -webkit-transition-property: background-color, border-color, box-shadow;
   -webkit-transition-duration: 10ms;
   -webkit-transition-timing-function: linear;
+  -moz-transition-property: background-color, border-color, box-shadow;
+  -moz-transition-duration: 10ms;
+  -moz-transition-timing-function: linear;
+  -ms-transition-property: background-color, border-color, box-shadow;
+  -ms-transition-duration: 10ms;
+  -ms-transition-timing-function: linear;
+  -o-transition-property: background-color, border-color, box-shadow;
+  -o-transition-duration: 10ms;
+  -o-transition-timing-function: linear;
+  transition-property: background-color, border-color, box-shadow;
+  transition-duration: 10ms;
+  transition-timing-function: linear;
 }
 
 .toolbarButton.toggled:hover:active,
@@ -424,8 +526,8 @@ html[dir='rtl'] .dropdownToolbarButton {
 }
 
 .dropdownToolbarButton > select {
-  -moz-appearance: none; /* in the future this might matter, see bugzilla bug #649849 */
   -webkit-appearance: none;
+  -moz-appearance: none; /* in the future this might matter, see bugzilla bug #649849 */
   min-width: 140px;
   font-size: 12px;
   color: hsl(0,0%,95%);
@@ -467,8 +569,8 @@ html[dir='rtl'] .toolbarButton:first-child {
 }
 
 .toolbarButtonFlexibleSpacer {
-  -moz-box-flex: 1;
   -webkit-box-flex: 1;
+  -moz-box-flex: 1;
   min-width: 30px;
 }
 
@@ -523,8 +625,8 @@ html[dir='rtl'] .toolbarButton.pageDown::before {
 }
 
 .toolbarButton.bookmark {
-  -moz-box-sizing: border-box;
   -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
   box-sizing: border-box;
   margin-top: 3px;
   padding-top: 4px;
@@ -603,8 +705,8 @@ html[dir='rtl'] .toolbarButton.pageDown::before {
   font-size: 12px;
   line-height: 14px;
   text-align: left;
-  -moz-user-select:none;
   -webkit-user-select:none;
+  -moz-user-select:none;
   cursor: default;
 }
 
@@ -680,8 +782,8 @@ a:focus > .thumbnail > .thumbnailSelectionRing,
   bottom: 0;
   padding: 4px 4px 0;
   overflow: auto;
-  -moz-user-select:none;
   -webkit-user-select:none;
+  -moz-user-select:none;
 }
 
 .outlineItem > .outlineItems {
@@ -791,9 +893,9 @@ canvas {
   margin: 10px auto;
   position: relative;
   overflow: hidden;
-  box-shadow: 0px 4px 10px #000;
-  -moz-box-shadow: 0px 4px 10px #000;
   -webkit-box-shadow: 0px 4px 10px #000;
+  -moz-box-shadow: 0px 4px 10px #000;
+  box-shadow: 0px 4px 10px #000;
   background-color: white;
 }
 
@@ -805,9 +907,9 @@ canvas {
 .page > a:hover {
   opacity: 0.2;
   background: #ff0;
-  box-shadow: 0px 2px 10px #ff0;
-  -moz-box-shadow: 0px 2px 10px #ff0;
   -webkit-box-shadow: 0px 2px 10px #ff0;
+  -moz-box-shadow: 0px 2px 10px #ff0;
+  box-shadow: 0px 2px 10px #ff0;
 }
 
 .loadingIcon {
@@ -855,12 +957,13 @@ canvas {
   float: left;
 
   background: #666;
-  background: -moz-linear-gradient(top, #b2b2b2 0%, #898989 100%);
   background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#b2b2b2), color-stop(100%,#898989));
   background: -webkit-linear-gradient(top, #b2b2b2 0%,#898989 100%);
-  background: -o-linear-gradient(top, #b2b2b2 0%,#898989 100%);
+  background: -moz-linear-gradient(top, #b2b2b2 0%,#898989 100%);
   background: -ms-linear-gradient(top, #b2b2b2 0%,#898989 100%);
-  background: linear-gradient(top, #b2b2b2 0%,#898989 100%);
+  background: -o-linear-gradient(top, #b2b2b2 0%,#898989 100%);
+  background: linear-gradient(top, #b2b2b2 0%,#898989 100%);    
+
   border-top-left-radius: 2px;
   border-bottom-left-radius: 2px;
 
@@ -912,9 +1015,9 @@ canvas {
   padding: 0.2em;
   max-width: 20em;
   background-color: #F1E47B;
-  box-shadow: 0px 2px 10px #333;
-  -moz-box-shadow: 0px 2px 10px #333;
   -webkit-box-shadow: 0px 2px 10px #333;
+  -moz-box-shadow: 0px 2px 10px #333;
+  box-shadow: 0px 2px 10px #333;
 }
 
 .annotComment > div > h1 {
@@ -1024,9 +1127,9 @@ canvas {
   .page {
     float: left;
     display: none;
-    box-shadow: none;
-    -moz-box-shadow: none;
     -webkit-box-shadow: none;
+    -moz-box-shadow: none;
+    box-shadow: none;
   }
 
   .page[data-loaded] {
diff --git a/web/viewer.js b/web/viewer.js
index 2078175e7..d371c3242 100644
--- a/web/viewer.js
+++ b/web/viewer.js
@@ -1846,6 +1846,18 @@ window.addEventListener('pagechange', function pagechange(evt) {
   document.getElementById('next').disabled = (page >= PDFView.pages.length);
 }, true);
 
+// Firefox specific event, so that we can prevent browser from zooming
+window.addEventListener('DOMMouseScroll', function(evt) {
+  if (evt.ctrlKey) {
+    evt.preventDefault();
+
+    var ticks = evt.detail;
+    var direction = (ticks > 0) ? 'zoomOut' : 'zoomIn';
+    for (var i = 0, length = Math.abs(ticks); i < length; i++)
+      PDFView[direction]();
+  }
+}, false);
+
 window.addEventListener('keydown', function keydown(evt) {
   var handled = false;
   var cmd = (evt.ctrlKey ? 1 : 0) |