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Test Info:
<!--
Any copyright is dedicated to the Public Domain.
Test document.mozSetImageElement() DOM API and check if ID targets are
correctly overridden.
-->
<html>
<head>
<style>
div {
width: 10px;
height: 10px;
}
</style>
</head>
<body style="margin:0">
<div style="background:-moz-element(#d1);"></div>
<div style="background:-moz-element(#d2);"></div>
<div style="background:-moz-element(#d3);"></div>
<div style="overflow:hidden; height:0;">
<div id="d1" style="background:red;"></div>
<div id="d2" style="background:blue;"></div>
<!-- two elements with the same ID: the former one will be used -->
<div id="d3" style="background:black;"></div>
<div id="d3" style="background:yellow;"></div>
</div>
<script>
var d1 = document.getElementById("d1");
var d2 = document.getElementById("d2");
var d3 = document.getElementById("d3");
document.mozSetImageElement("d1", d3);
document.mozSetImageElement("d2", null);
document.mozSetImageElement("d3", d1);
document.mozSetImageElement("d3", null);
document.mozSetImageElement("d4", d1);
document.mozSetImageElement("", d1);
d1.id = "d2";
d2.id = "d1";
</script>
</body>
</html>