fix not defined error; fix element not exist for target selectors error; fix disabled state when going "back" to net error page

content/netError.xhtml

@@ -214,6 +214,10 @@
 	/>
 
 	<div id='resurrect'>
+		<!-- fake elements that have IDs matching target selector -->
+		<div id='targetTab' style='display: none;'></div>
+		<div id='targetWin' style='display: none;'></div>
+
 		<p>&resurrect.thispage;</p>
 		<select id='mirror' size='5'>
 			<option value='coralcdn'>&resurrect.coralcdn;</option>
@@ -225,7 +229,7 @@
 		<br />
 
 		<xul:button xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-			id="mirrorSelect" label="&okButton.label;" oncommand="resurrect.selectMirror();"
+			id="mirrorSelect" label="&okButton.label;"
 		/>
 	</div>
 </div>

content/resurrect.js

@@ -39,6 +39,8 @@ var resurrect={
 	},
 
 	attachClickEvent:function() {
+		resurrect.disabled=false;
+
 		var contentWin=getBrowser().contentWindow;
 		if (contentWin.document.documentURI.match(/^about:neterror/)) {
 			contentWin.document.getElementById('mirror').addEventListener(