1 files changed, 31 insertions, 0 deletions
diff --git a/layout/reftests/margin-collapsing/block-negative-3b-dyn2.html b/layout/reftests/margin-collapsing/block-negative-3b-dyn2.html
new file mode 100644
index 0000000000..67c0d82f4a
--- /dev/null
+++ b/layout/reftests/margin-collapsing/block-negative-3b-dyn2.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+<style type="text/css">
+html, body {
+ margin: 0; padding: 5px;
+}
+div {
+ height: 20px;
+ background-color: green;
+}
+#negative {
+ margin-bottom: -80px;
+}
+#positive {
+ margin-top: 0;
+}
+</style>
+<script type="text/javascript">
+function test() {
+ document.getElementById('positive').style.marginTop = '100px';
+ document.documentElement.removeAttribute('class');
+}
+document.addEventListener('MozReftestInvalidate', test);
+</script>
+</head>
+<body>
+<div id="negative"></div>
+<div id="positive"></div>
+</body>
+</html>