1 files changed, 13 insertions, 0 deletions

diff --git a/inc/html.inc.php b/inc/html.inc.php
index 9107269..c8cfbaf 100644
--- a/inc/html.inc.php
+++ b/inc/html.inc.php
@@ -54,6 +54,19 @@ echo <<<EOT
   <h1><a href="{$html_weburl}">Collectd Graph Panel</a></h1>
 </div>
 
+EOT;
+
+        if(!function_exists('json_decode')) {
+                echo <<<EOT
+<div id="warnheader">
+        Your php version doesn't support <a href="http://php.net/json">JSON</a>. Your graphs would have looked more beautiful if it did.
+</div>
+
+EOT;
+
+        }
+
+echo <<<EOT
 <div id="content">
 
 EOT;