Fix for Firefox 4

Works with 3.6.22, 4.0.1, 7.0.

content/browserOverlay3.xul

@@ -4,13 +4,7 @@
 <overlay id="UniversalEditBtn_Overlay" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
     <script type="application/x-javascript" src="chrome://universaleditbtn/content/overlay.js"/>
 
-    <toolbarpalette id="BrowserToolbarPalette">
-        <toolbaritem id="urlbar-container">
-            <textbox id="urlbar">
-                <hbox id="urlbar-icons">
-                    <image id="universaleditbtn-icon" />
-                </hbox>
-            </textbox>
-        </toolbaritem>
-    </toolbarpalette>
+    <hbox id="urlbar-icons">
+        <image id="universaleditbtn-icon" insertbefore="star-button" />
+    </hbox>
 </overlay>

install.rdf

@@ -13,7 +13,7 @@
       <Description>
         <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id> <!-- firefox -->
         <em:minVersion>2.0</em:minVersion>
-        <em:maxVersion>4.*</em:maxVersion>
+        <em:maxVersion>7.*</em:maxVersion>
       </Description>
     </em:targetApplication>
   </Description>