add a note about NoScript's ABE, small fix

bookmarklet.html

@@ -42,6 +42,10 @@ <h1>html2canvas Bookmarklet</h1>
 			click / tap that link and then bookmark the page, edit the bookmark and remove the start up until including <code>#_remove_this_</code>
 			part at the beginning of the URL, it must start with: <code>javascript:</code> to be correct.
 		</p>
+		<p>
+			If you are using Firefox and the NoScript Addon: disable the ABE part of it,
+			took me quite some time to figure out that the reason for an unreliable bookmarklet was in NoScript...
+		</p>
 		<h2>For Developers:</h2>
 		<p>
 			If you are a developer and want to debug locally (you need the source tree of your html2canvas at:

src/plugins/bookmarklet.js

@@ -68,6 +68,7 @@
     statusline.style.border = '1px solid black';
     statusline.style.borderBottomWidth = '0px';
     statusline.style.padding = '2px 5px';
+    statusline.style.zIndex = 9999999;
     document.body.appendChild(statusline);
     loader.onload();
 }());