//禁用Ctrl+Shift+I  Ctrl+U
        $(document).keydown(function(e) {
            //按了 Ctrl+Shift+I   或者 Ctrl+U
            if ((e.ctrlKey && e.shiftKey && e.which == 73) || (e.ctrlKey && e.which == 85)) {
                e.preventDefault();
                // window.location.href = "about:blank";
                // window.close();
            }
        });
                //禁止鼠标右键
        $(document).on("contextmenu", function(e) {
            e.preventDefault();
            return false;
        });
        //窗口调整大小
                $(window).on("resize", function(e) {
            if ($(window).height() < $(document).height()) {
                e.preventDefault();
                 window.location.href = "about:blank";
                window.close();
            }
        });