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+<!DOCTYPE html>
+<html lang="en-US" class="reftest-wait">
+<head>
+	<title>Testcase, bug 830299</title>
+	<meta charset=UTF-8>
+	<style type="text/css">
+
+	html { margin: 1px; padding: 2px }
+	body { margin: 4px; padding: 8px }
+
+	#outer {
+		position: absolute;
+		overflow: hidden;
+		transform: translateX(0px);
+		top: 3px; left: 5px;
+		width: 200px; height: 200px;
+		background: yellow;
+	}
+	
+	#inner {
+		position: fixed;
+		top: 7px; left: 9px;
+		width: 100px; height: 100px;
+		background: aqua;
+	}
+
+	</style>
+	<script type="text/javascript">
+
+	window.addEventListener("load", function(event) {
+	                        	setTimeout(function() {
+	                        	           	document.getElementById("inner").style.display = "";
+	                        	           	document.documentElement.removeAttribute("class");
+	                        	           }, 100);
+	                        }, false);
+
+	</script>
+</head>
+<body>
+
+<div id="outer">
+  <div id="inner" style="display:none">inner</div>
+</div>
+
+</body>
+</html>