diff --git a/qutebrowser/javascript/position_caret.js b/qutebrowser/javascript/position_caret.js
index 9213df49d..b75f8edf4 100644
--- a/qutebrowser/javascript/position_caret.js
+++ b/qutebrowser/javascript/position_caret.js
@@ -1,6 +1,6 @@
 /**
 * Copyright 2015 Artur Shaik <ashaihullin@gmail.com>
-* Copyright 2015 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+* Copyright 2015-2016 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
 *
 * This file is part of qutebrowser.
 *
@@ -32,79 +32,83 @@
 
 "use strict";
 
-function isElementInViewport(node) {  // eslint-disable-line complexity
-    var i;
-    var boundingRect = (node.getClientRects()[0] ||
-                        node.getBoundingClientRect());
+(function() {
+    function isElementInViewport(node) {  // eslint-disable-line complexity
+        var i;
+        var boundingRect = (node.getClientRects()[0] ||
+                            node.getBoundingClientRect());
 
-    if (boundingRect.width <= 1 && boundingRect.height <= 1) {
-        var rects = node.getClientRects();
-        for (i = 0; i < rects.length; i++) {
-            if (rects[i].width > rects[0].height &&
-                    rects[i].height > rects[0].height) {
-                boundingRect = rects[i];
+        if (boundingRect.width <= 1 && boundingRect.height <= 1) {
+            var rects = node.getClientRects();
+            for (i = 0; i < rects.length; i++) {
+                if (rects[i].width > rects[0].height &&
+                        rects[i].height > rects[0].height) {
+                    boundingRect = rects[i];
+                }
             }
         }
+        if (boundingRect === undefined) {
+            return null;
+        }
+        if (boundingRect.top > innerHeight || boundingRect.left > innerWidth) {
+            return null;
+        }
+        if (boundingRect.width <= 1 || boundingRect.height <= 1) {
+            var children = node.children;
+            var visibleChildNode = false;
+            for (i = 0; i < children.length; ++i) {
+                boundingRect = (children[i].getClientRects()[0] ||
+                                children[i].getBoundingClientRect());
+                if (boundingRect.width > 1 && boundingRect.height > 1) {
+                    visibleChildNode = true;
+                    break;
+                }
+            }
+            if (visibleChildNode === false) {
+                return null;
+            }
+        }
+        if (boundingRect.top + boundingRect.height < 10 ||
+                boundingRect.left + boundingRect.width < -10) {
+            return null;
+        }
+        var computedStyle = window.getComputedStyle(node, null);
+        if (computedStyle.visibility !== "visible" ||
+                computedStyle.display === "none" ||
+                node.hasAttribute("disabled") ||
+                parseInt(computedStyle.width, 10) === 0 ||
+                parseInt(computedStyle.height, 10) === 0) {
+            return null;
+        }
+        return boundingRect.top >= -20;
     }
-    if (boundingRect === undefined) {
-        return null;
-    }
-    if (boundingRect.top > innerHeight || boundingRect.left > innerWidth) {
-        return null;
-    }
-    if (boundingRect.width <= 1 || boundingRect.height <= 1) {
-        var children = node.children;
-        var visibleChildNode = false;
-        for (i = 0; i < children.length; ++i) {
-            boundingRect = (children[i].getClientRects()[0] ||
-                            children[i].getBoundingClientRect());
-            if (boundingRect.width > 1 && boundingRect.height > 1) {
-                visibleChildNode = true;
+
+    function positionCaret() {
+        var walker = document.createTreeWalker(document.body, 4, null);
+        var node;
+        var textNodes = [];
+        var el;
+        while ((node = walker.nextNode())) {
+            if (node.nodeType === 3 && node.data.trim() !== "") {
+                textNodes.push(node);
+            }
+        }
+        for (var i = 0; i < textNodes.length; i++) {
+            var element = textNodes[i].parentElement;
+            if (isElementInViewport(element.parentElement)) {
+                el = element;
                 break;
             }
         }
-        if (visibleChildNode === false) {
-            return null;
+        if (el !== undefined) {
+            var range = document.createRange();
+            range.setStart(el, 0);
+            range.setEnd(el, 0);
+            var sel = window.getSelection();
+            sel.removeAllRanges();
+            sel.addRange(range);
         }
     }
-    if (boundingRect.top + boundingRect.height < 10 ||
-            boundingRect.left + boundingRect.width < -10) {
-        return null;
-    }
-    var computedStyle = window.getComputedStyle(node, null);
-    if (computedStyle.visibility !== "visible" ||
-            computedStyle.display === "none" ||
-            node.hasAttribute("disabled") ||
-            parseInt(computedStyle.width, 10) === 0 ||
-            parseInt(computedStyle.height, 10) === 0) {
-        return null;
-    }
-    return boundingRect.top >= -20;
-}
 
-(function() {
-    var walker = document.createTreeWalker(document.body, 4, null);
-    var node;
-    var textNodes = [];
-    var el;
-    while ((node = walker.nextNode())) {
-        if (node.nodeType === 3 && node.data.trim() !== "") {
-            textNodes.push(node);
-        }
-    }
-    for (var i = 0; i < textNodes.length; i++) {
-        var element = textNodes[i].parentElement;
-        if (isElementInViewport(element.parentElement)) {
-            el = element;
-            break;
-        }
-    }
-    if (el !== undefined) {
-        var range = document.createRange();
-        range.setStart(el, 0);
-        range.setEnd(el, 0);
-        var sel = window.getSelection();
-        sel.removeAllRanges();
-        sel.addRange(range);
-    }
+    positionCaret();
 })();