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    if (window.testRunner)
        testRunner.dumpAsText();

    log("This test was written to address rdar://problem/4976879.  And tests how namespaceURI's are assigned.");
    log("");

    log("Test1: document.namespaceURI")
    shouldBe("document.namespaceURI", "undefined");
    log("");

    log("Test2: document.createElement().namespaceURI")
    shouldBe("document.createElement(\"div\").namespaceURI", "'http://www.w3.org/1999/xhtml'");
    log("");

    var myScriptTag = document.getElementById("scriptTag");
    log("Test3: script tag.namespaceURI");
    shouldBe("myScriptTag.namespaceURI", "'http://www.w3.org/1999/xhtml'");
    log("");

    var newDoc = document.implementation.createDocument("http://www.w3.org/1999/xhtml", "", null);
    log("Test4: created document.namespaceURI");
    shouldBe("newDoc.namespaceURI", "undefined");
    log("");

    log("Test5: created document.createElement.namespaceURI");
    shouldBe("newDoc.createElement(\"div\").namespaceURI", "'http://www.w3.org/1999/xhtml'");
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