1 files changed, 32 insertions, 0 deletions
diff --git a/static/js/src/youtube.js b/static/js/src/youtube.js
new file mode 100644
index 0000000..7b819dc
--- /dev/null
+++ b/static/js/src/youtube.js
@@ -0,0 +1,32 @@
+Youtube = {
+  "timer": 0,
+  
+  "startAnimation": function(){
+    if (!Youtube.timer)
+      Youtube.timer = setTimeout(Youtube.animate, 1000)
+  },
+  
+  "animate": function(){
+    var thumbs = $(".youtube-thumb")
+    thumbs.each(Youtube.nextThumb)
+    if (thumbs.length == 0){
+      clearTimeout(Youtube.timer)
+      Youtube.timer = 0
+    } else Youtube.timer = setTimeout(Youtube.animate, 1000);
+  },
+  
+  "nextThumb": function(){
+    var img = $(this);
+    // yt thumb url is http://i.ytimg.com/vi/0123456789A/1.jpg
+    var v = img.attr("src").substr(22,11)
+    var num = img.attr("src").charAt(34);
+    img.attr("src", (Youtube.nextThumbUrl(v, num)))
+  },
+  
+  "nextThumbUrl": function(v, num){
+    if (!num) num = 0;
+    num = (parseInt(num) % 3) + 1 // cycle over 1,2,3
+    return "http://i.ytimg.com/vi/" + v + "/" + num + ".jpg"
+  },
+  
+}