1 files changed, 32 insertions, 0 deletions
diff --git a/layout/reftests/margin-collapsing/block-first-child-3-dyn.html b/layout/reftests/margin-collapsing/block-first-child-3-dyn.html
new file mode 100644
index 0000000000..43cf254750
--- /dev/null
+++ b/layout/reftests/margin-collapsing/block-first-child-3-dyn.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+<style type="text/css">
+#separator {
+ height: 20px;
+ background-color: green;
+}
+#first-child {
+ height: 20px;
+ margin-top: 0px;
+ background-color: blue;
+}
+#parent {
+ margin-top: 20px;
+}
+</style>
+<script type="text/javascript">
+function test() {
+ document.getElementById('first-child').style.marginTop = '-20px';
+ document.documentElement.removeAttribute('class');
+}
+document.addEventListener('MozReftestInvalidate', test);
+</script>
+</head>
+<body>
+<div id="separator"></div>
+<div id="parent">
+ <div id="first-child"></div>
+</div>
+</body>
+</html>