Issue #351 - EHH Scrollbar hiding the type of selected element

lib/aardvark.js

 /*
  * This Source Code is subject to the terms of the Mozilla Public License
  * version 2.0 (the "License"). You can obtain a copy of the License at
  * http://mozilla.org/MPL/2.0/.
  */
 
 let {Prefs} = require("prefs");
 
 // Make sure to stop selection when we are uninstalled
 onShutdown.add(function() Aardvark.quit());
@@ skipping 363 matching lines @@
       this.boxElem.parentNode.removeChild(this.boxElem);
 
     if (this.paintNode)
       this.paintNode.removeEventListener("MozAfterPaint", this.onAfterPaint, false);
     this.paintNode = null;
     this.prevPos = null;
   },
 
   getWindowSize: function(wnd)
   {
-    return [wnd.innerWidth, wnd.innerHeight];
+    return [wnd.innerWidth, wnd.document.documentElement.clientHeight];
   },
 
   getElementPosition: function(element)
   {
     // Restrict rectangle coordinates by the boundaries of a window's client area
     function intersectRect(rect, wnd)
     {
       let [wndWidth, wndHeight] = this.getWindowSize(wnd);
       rect.left = Math.max(rect.left, 0);
       rect.top = Math.max(rect.top, 0);
@@ skipping 329 matching lines @@
     // Show help box
     helpBox.showPopup(this.browser, -1, -1, "tooltip", "topleft", "topleft");
     return true;
   }
 }
 
 // Makes sure event handlers like Aardvark.onKeyPress always have the correct
 // this pointer set.
 for each (let method in ["onMouseClick", "onMouseScroll", "onKeyPress", "onPageHide", "onMouseMove", "onAfterPaint", "quit"])
   Aardvark[method] = Aardvark[method].bind(Aardvark);