diff --git a/layout/tables/crashtests/399209-1.xhtml b/layout/tables/crashtests/399209-1.xhtml
new file mode 100644
index 00000000000..932fca8b596
--- /dev/null
+++ b/layout/tables/crashtests/399209-1.xhtml
@@ -0,0 +1,15 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<script>
+function boom()
+{
+  document.documentElement.style.emptyCells = "show";
+  document.getElementsByTagName("td")[0].style.borderColor = "magenta";
+  document.getElementsByTagName("col")[0].style.position = "absolute";
+}
+</script>
+</head>
+<body onload="boom();">
+<td><col span="3"></col></td>
+</body>
+</html>
diff --git a/layout/tables/crashtests/crashtests.list b/layout/tables/crashtests/crashtests.list
index f026a3dd089..04939b52cb4 100644
--- a/layout/tables/crashtests/crashtests.list
+++ b/layout/tables/crashtests/crashtests.list
@@ -3,3 +3,4 @@ load 331344-1.html
 load 331446-1.xhtml
 load 379687-1.html
 load 398157-1.xhtml
+load 399209-1.xhtml
