diff -r 000000000000 -r 6474c204b198 content/html/document/test/bug448564-submit.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/html/document/test/bug448564-submit.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,4 @@
+var inputs = document.getElementsByTagName("input");
+for (var input, i = 0; input = inputs[i]; ++i)
+  if ("submit" == input.type)
+    input.click();