From 281e923498181b4e10e730132fe7e3c75419c07b Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Sat, 23 Apr 2016 03:07:49 +0200
Subject: script

---
 index.html | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 6271924..457a652 100644
--- a/index.html
+++ b/index.html
@@ -16,10 +16,22 @@
       }
       var xs = document.querySelectorAll(".taler-installed");
       for (var i = 0; i < xs.length; i++) {
-        xs[i].style.display = "";
+        xs[i].style.display = "inherit";
+      }
+    }
+    function handlePresent() {
+      console.log("handling onPresent event");
+      var xs = document.querySelectorAll(".taler-not-installed");
+      for (var i = 0; i < xs.length; i++) {
+        xs[i].style.display = "inherit";
+      }
+      var xs = document.querySelectorAll(".taler-installed");
+      for (var i = 0; i < xs.length; i++) {
+        xs[i].style.display = "none";
       }
     }
     taler.onPresent(handlePresent);
+    taler.onAbsent(handleAbsent);
   </script>
 
   <style type="text/css">
@@ -31,6 +43,9 @@
     .taler-installed {
       display: none;
     }
+    .taler-not-installed {
+      display: none;
+    }
 
     .bluebox {
       background-color: #C2C6FF;
-- 
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