diff --git a/src/test/html/longcat.html b/src/test/html/longcat.html
index 53e13c3fcee..612a1dac758 100644
--- a/src/test/html/longcat.html
+++ b/src/test/html/longcat.html
@@ -1,5 +1,8 @@
+
diff --git a/src/test/html/longcat.js b/src/test/html/longcat.js
index d492c3417c4..0e3a0991fa4 100644
--- a/src/test/html/longcat.js
+++ b/src/test/html/longcat.js
@@ -14,10 +14,11 @@ function wait_for_img_load(f) {
wait_for_img_load(function() {
var count = 0;
function elongate() {
- let height = Math.round((Math.sin(count) + 1) * 70 + 20);
+ var height = Math.round((Math.cos(count + Math.PI) + 1) * 100 + 20);
count += 0.2;
longcat_mid.height = height;
- window.setTimeout(function() { elongate() }, 100);
+ longcat_mid.width = 600;
+ window.setTimeout(function() { elongate() }, 50);
}
elongate();
});