diff --git a/layout/reftests/scrolling/scrolling.js b/layout/reftests/scrolling/scrolling.js
index b7a861274e8..c01369abe51 100644
--- a/layout/reftests/scrolling/scrolling.js
+++ b/layout/reftests/scrolling/scrolling.js
@@ -1,12 +1,24 @@
var topElements = document.getElementsByClassName("scrollTop");
if (!topElements.length) {
- topElements = [document.body];
+ topElements = [document.documentElement];
}
+var failed = false;
+
function doScroll(d)
{
+ if (failed)
+ return;
for (var i = 0; i < topElements.length; ++i) {
- topElements[i].scrollTop = d;
+ var e = topElements[i];
+ e.scrollTop = d;
+ if (e.scrollTop != d) {
+ document.documentElement.textContent =
+ "Scrolling failed on " + e.tagName + " element, " +
+ "tried to scroll to " + d + ", got " + e.scrollTop +
+ " (Random number: " + Math.random() + ")";
+ failed = true;
+ }
}
}
diff --git a/layout/reftests/scrolling/text-1.html b/layout/reftests/scrolling/text-1.html
index 0ede92a6fa2..23afe84ce49 100644
--- a/layout/reftests/scrolling/text-1.html
+++ b/layout/reftests/scrolling/text-1.html
@@ -1,10 +1,10 @@
-
-