javascript - 使用 jquery 在 iframe 中捕获鼠标右键单击事件

Question

我需要使用任何 javascript 或 jquery 代码在 asp.net 的 iframe 中捕获鼠标右键单击事件。

下面是我到目前为止尝试过的代码。

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Detect IFrame Clicks</title>

<script type="text/javascript" language="javascript" src="JScript/jquery-1.7.1.js"></script>

<script type="text/javascript" language="javascript" src="JScript/jquery.ui.core.js"></script>

<script type="text/javascript" language="javascript" src="JScript/jquery.ui.widget.js"></script>

<script type="text/javascript" language="javascript" src="JScript/jquery.ui.mouse.js"></script>

<script type="text/javascript">        
    document.onmousedown = onMousebtClick
    var isOverIFrame = false;
    $(document).ready(function() {
        function processMouseOut() {
            isOverIFrame = false;
            top.focus();
        }

        function processMouseOver() {
            isOverIFrame = true;
        }

        function processIFrameClick() {
            if (isOverIFrame) {
                log("CLICK << detected. ");
                onMousebtClick();
            }
        }

        function log(message) {
            var console = document.getElementById("console");
            var text = console.value;
            text = text + message + "\n";
            console.value = text;
        }

        function attachOnloadEvent(func, obj) {
            if (typeof window.addEventListener != 'undefined') {
                window.addEventListener('load', func, false);
            } else if (typeof document.addEventListener != 'undefined') {
                document.addEventListener('load', func, false);
            } else if (typeof window.attachEvent != 'undefined') {
                window.attachEvent('onload', func);
            } else {
                if (typeof window.onload == 'function') {
                    var oldonload = onload;
                    window.onload = function() {
                        oldonload();
                        func();
                    };
                } else {
                    window.onload = func;
                }
            }
        }

        function init() {
            var element = document.getElementsByTagName("iframe");
            for (var i = 0; i < element.length; i++) {
                element[i].onmouseover = processMouseOver;
                element[i].onmouseout = processMouseOut;
            }
            if (typeof window.attachEvent != 'undefined') {
                top.attachEvent('onblur', processIFrameClick);
            }
            else if (typeof window.addEventListener != 'undefined') {
                top.addEventListener('blur', processIFrameClick, false);
            }
        }

        attachOnloadEvent(init);

    });

    function onMousebtClick() {
        switch (event.button) {
            case 1:
                alert("leftclick");
                break;

            case 2:
                alert("right click");
                break;
        }
    }
    /*document.onmousedown = onMousebtClick*/
</script>

</head>
<body id="mybody">
<iframe src="http://www.microsoft.com" width="800px" height="300px" id="ifrm">
</iframe>
<br />
<br />
<form name="form" id="form" action="">
<textarea name="console" id="console" style="width: 300px; height: 300px;" cols=""
    rows=""></textarea>
<button name="clear" id="clear" type="reset">
    Clear</button>
</form>
</body>
</html>

我可以检测到正文标记中的鼠标右键单击，但我无法检测到 iframe 内的鼠标右键单击事件。

谁能帮帮我吗。