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diff --git a/layout/reftests/image-rect/background-draw-nothing-invalid-syntax.html b/layout/reftests/image-rect/background-draw-nothing-invalid-syntax.html
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+++ b/layout/reftests/image-rect/background-draw-nothing-invalid-syntax.html
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+<!DOCTYPE html>
+<!--
+    Any copyright is dedicated to the Public Domain.
+    http://creativecommons.org/licenses/publicdomain/
+
+    Tests if the CSS parser can detect wrong syntax of -moz-image-rect() and
+    gracefully fail.
+-->
+<html>
+  <head>
+    <title>Testcases: -moz-image-rect() [bug 113577]</title>
+    <style>
+      div.wrapper {
+        width: 32px;
+        height: 32px;
+        margin: 10px;
+        background-color: red;
+      }
+      div.wrapper div {
+        width: 32px;
+        height: 32px;
+        background: no-repeat;
+      }
+      #test1 {
+        /* only non-negative values accepted */
+        background-image: -moz-image-rect(url(green-16x16-in-blue-32x32.png), -1, 16, 16, 0);
+      }
+      #test2 {
+        /* only bare numbers and percent values accepted */
+        background-image: -moz-image-rect(url(green-16x16-in-blue-32x32.png), 0px, 16, 16, 0);
+      }
+      #test3 {
+        /* must have a complete set of <top>, <right>, <bottom>, <left> */
+        background-image: -moz-image-rect(url(green-16x16-in-blue-32x32.png), 16, 16);
+      }
+      #test4 {
+        /* must be comma separated */
+        background-image: -moz-image-rect(url(green-16x16-in-blue-32x32.png)  0, 16, 16, 0);
+      }
+    </style>
+  </head>
+  <body>
+    <div class="wrapper"><div id="test1"></div></div>
+    <div class="wrapper"><div id="test2"></div></div>
+    <div class="wrapper"><div id="test3"></div></div>
+    <div class="wrapper"><div id="test4"></div></div>
+  </body>
+</html>