Issue 703 - Make sure that z-index of the "Block Element" dialog is the highest in the document

include.postload.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 100 matching lines @@
     clickHide_deactivate();
     currentElement = savedElement;
   }
 
   clickHide_filters = filters;
 
   clickHideFiltersDialog = document.createElement("iframe");
   clickHideFiltersDialog.src = ext.getURL("block.html");
   clickHideFiltersDialog.setAttribute("style", "position: fixed !important; visibility: hidden; display: block !important; border: 0px !important;");
   clickHideFiltersDialog.style.WebkitBoxShadow = "5px 5px 20px rgba(0,0,0,0.5)";
-  clickHideFiltersDialog.style.zIndex = 99999;
+  clickHideFiltersDialog.style.zIndex = 0x7FFFFFFF;
 
   // Position in upper-left all the time
   clickHideFiltersDialog.style.left = "50px";
   clickHideFiltersDialog.style.top = "50px";
 
   // Make dialog partly transparent when mouse isn't over it so user has a better
   // view of what's going to be blocked
   clickHideFiltersDialog.onmouseout = function()
   {
     if (clickHideFiltersDialog)
@@ skipping 437 matching lines @@
 
           clickHide_deactivate();
         }
         break;
       default:
         sendResponse({});
         break;
     }
   });
 }