diff --git a/index.html b/index.html
index b597bcab62..558419d61a 100644
--- a/index.html
+++ b/index.html
@@ -9,7 +9,9 @@ purposes.'>
 <link href='//fonts.googleapis.com/css?family=Lekton' rel='stylesheet'>
 <!-- Warning: this file was generated from try.html -->
 <style>
-html { background-attachment: fixed; transition: background-color 0.5s; }
+html { background-attachment: fixed; transition: background-color 0.5s;
+  background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2NDAiIGhlaWdodD0iNDgwIj48ZmlsdGVyIGlkPSJhIj48ZmVUdXJidWxlbmNlIGJhc2VGcmVxdWVuY3k9Ii4wOCIgbnVtT2N0YXZlcz0iOCIgc3RpdGNoVGlsZXM9InN0aXRjaCIgc2VlZD0iMzQ2Ii8+PGZlQ29sb3JNYXRyaXggdmFsdWVzPSIxIDAgMCAwIDAgIDEgMCAwIDAgMCAgMSAwIDAgMCAuOSAgLjAxIDAgMCAwIC4wMSIvPjwvZmlsdGVyPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbHRlcj0idXJsKCNhKSIvPjwvc3ZnPg==);
+}
 :root { text-align: center; font-family: Lekton, sans-serif; color: #534; }
 code, #copyMarkdown, #copyreStructuredText {
   white-space: pre-wrap; padding: 0 4px; border: 1px solid grey;
@@ -733,12 +735,4 @@ function makeImage() {
 function escapeField(s) {
   return encodeURIComponent(s.replace(/-/g, '--').replace(/_/g, '__'));
 }
-
-// Background image
-(function background() {
-  var seed = (Math.random() * 1000)|0;
-  var domHtml = document.documentElement;
-  var svg = '<svg xmlns="http://www.w3.org/2000/svg" width="' + domHtml.clientWidth + '" height="' + domHtml.clientHeight + '"><filter id="a"><feTurbulence baseFrequency=".08" numOctaves="8" stitchTiles="stitch" seed="' + seed + '"/><feColorMatrix values="1 0 0 0 0  1 0 0 0 0  1 0 0 0 .9  .01 0 0 0 .01"/></filter><rect width="100%" height="100%" filter="url(#a)"/></svg>';
-  domHtml.style.backgroundImage = 'url(data:image/svg+xml;base64,' + btoa(svg) + ')';
-}());
 </script>