handle_rpc_json: fix netalert button never appearing on JSON parse error

index.php

@@ -232,8 +232,7 @@
 
 			<button id="net-alert" dojoType="dijit.form.Button" style="display : none" disabled="true"
 				title="<?php echo __("Communication problem with server.") ?>">
-			<img
-				src="images/error.png" />
+				<img src="images/error.png" />
 			</button>
 
 			<div dojoType="dijit.form.DropDownButton">

js/tt-rss.js

@@ -994,14 +994,14 @@ function reverseHeadlineOrder() {
 }
 
 function handle_rpc_json(transport, scheduled_call) {
-	try {
-		var reply = JSON.parse(transport.responseText);
 
-		var netalert_dijit = dijit.byId("net-alert");
-		var netalert = false;
+	var netalert_dijit = dijit.byId("net-alert");
+	var netalert = false;
+
+	if (netalert_dijit) netalert = netalert_dijit.domNode;
 
-		if (netalert_dijit)
-			netalert = netalert_dijit.domNode;
+	try {
+		var reply = JSON.parse(transport.responseText);
 
 		if (reply) {
 
@@ -1049,18 +1049,18 @@ function handle_rpc_json(transport, scheduled_call) {
 			if (runtime_info)
 				parse_runtime_info(runtime_info);
 
-			if (netalert) Element.hide(netalert);
+			if (netalert) netalert.hide();
 
 		} else {
 			if (netalert)
-				Element.show(netalert);
+				netalert.show();
 			else
 				notify_error("Communication problem with server.");
 		}
 
 	} catch (e) {
 		if (netalert)
-			Element.show(netalert);
+			netalert.show();
 		else
 			notify_error("Communication problem with server.");