<!DOCTYPE HTML>
<html>
    <head>
        <title> W3C DOM Level 3 Event: focusin </title>
        <script type="text/javascript">
            var PassTest = function()
            {
                document.getElementById("testresult").firstChild.data = "PASS";
            }

            var FailTest = function()
            {
                document.getElementById("testresult").firstChild.data = "FAIL";
            }

            var EVENT = "focusin";
            var TARGET, PARENT;

            window.onload = function()
            {
                try
                {
                    TARGET = document.getElementById("target");
                    PARENT = document.getElementById("parent");

                    PARENT.addEventListener(EVENT, TestBubble, false);
                }
                catch(ex)
                {
                    FailTest();
                }
            }

            function TestBubble(evt)
            {
                if ((evt.type == EVENT) && (evt.currentTarget == PARENT) && (evt.target == TARGET))
                {
                    PassTest();
                }
                else
                {
                    FailTest();
                }
            }
        </script>
    </head>
    <body>
        <h4>
            Test Description:
            focusin event fires when an event target is about to receive focus.
        </h4>

        <div id="parent">
            Click here: <input id="target" />
        </div>

        <p>Test passes if the word "PASS" appears below after clicking the above textbox using mouse.</p>
           <div>Test result: </div>
        <div id='testresult'>FAIL</div>
    </body>
</html>