禁止使用右键

禁止使用右键

   <script>
        document.oncontextmenu = new Function("event.returnValue=false;"); //禁止右键功能
        document.onkeydown = MM_KeyPress;
        function MM_KeyPress(num) {
            //防止系统退格键
            var keycODe = event.keyCODe;
            if (keycode == 8)//屏蔽退格健
            {
                event.keyCode = 0;
                return;
            }
            if (keycode >= 122 && keycode <= 123)//屏蔽f12功能键
            {
                event.keyCode = 0;
                event.returnValue = false;
                return;
            }
        }
        function gg() {
            layer.alert('欢迎使用本网站
', {
                icon: 1,
                title: '注意',
                skin: 'layer-ext-moon'
            })
        }
        function click(e) {
            if (document.all) {
                if (event.button == 2 || event.button == 3) {
                    // alert("欢迎光临寒舍，有什么需要帮忙的话，请与站长联系！谢谢您的合作！！！");
                    oncontextmenu = 'return false';
                }
            }
            if (document.layers) {
                if (e.which == 3) {
                    oncontextmenu = 'return false';
                }
            }
        }
        if (document.layers) {
            document.captureEvents(Event.MOUSEDOWN);
        }
        document.onmousedown = click;
        document.oncontextmenu = new Function("return false;")
        document.onkeydown = document.onkeyup = document.onkeypress = function () {
            if (window.event.keyCode == 123) {
                window.event.returnValue = false;
                return (false);
            }
        }
    </script>