右键.css

    <!-- 修改鼠标右键 -->
    <style type="text/css">
        a {text-decoration: none;}
        div.usercm{background-repeat:no-repeat;background-position:center center;background-size:cover;background-color:#fff;font-size:13px!important;width:130px;-moz-box-shadow:1px 1px 3px rgba
    (0,0,0,.3);box-shadow:1px 1px 3px rgba(0,0,0,.3);position:absolute;display:none;z-index:10000;opacity:0.9;}
        div.usercm ul{list-style-type:none;list-style-position:outside;margin:0px;padding:0px;display:block}
        div.usercm ul li{margin:0px;padding:0px;line-height:35px;border-bottom:1px solid #ccc;}
        div.usercm ul li a{color:#666;padding:0 15px;display:block}
        div.usercm ul li a:hover{color:#fff;background: linear-gradient(-125deg,#2196F3 0%, #2196F3 100%);}
        div.usercm ul li a i{margin-right:10px}
        a.disabled{color:#c8c8c8!important;cursor:not-allowed}
        a.disabled:hover{background-color:rgba(255,11,11,0)!important}
        div.usercm{background:#fff !important;}
        </style>
        <div class="usercm">
        <ul>
            <li><a href="javascript:void(0);" onclick="getSelect();">
            <i class="fa fa-clipboard fa-fw"></i><span>复制文字</span></a></li>
            <li><a href="javascript:window.location.reload();"><i class="fa fa-refresh fa-fw"></i><span>刷新页面</span></a></li>
            <li><a href="javascript:history.go(1);"><i class="fa fa-arrow-right fa-fw"></i><span>前进一页</span></a></li>
            <li><a href="javascript:history.go(-1);"><i class="fa fa-arrow-left fa-fw"></i><span>后退一页</span></a></li>
            <li><a href="javascript:void(0);"  onclick="baiduSearch();"><i class="fa fa-paw fa-fw"></i><span>百度搜索</span></a></li>
        </ul>
        </div>
        <script type="text/javascript">
        (function(a) {
            a.extend({
                mouseMoveShow: function(b) {
                    var d = 0,
                        c = 0,
                        h = 0,
                        k = 0,
                        e = 0,
                        f = 0;
                    a(window).mousemove(function(g) {
                        d = a(window).width();
                        c = a(window).height();
                        h = g.clientX;
                        k = g.clientY;
                        e = g.pageX;
                        f = g.pageY;
                        h + a(b).width() >= d && (e = e - a(b).width() - 5);
                        k + a(b).height() >= c && (f = f - a(b).height() - 5);
                        a("html").on({
                            contextmenu: function(c) {
                                3 == c.which && a(b).css({
                                    left: e,
                                    top: f
                                }).show()
                            },
                            click: function() {
                                a(b).hide()
                            }
                        })
                    })
                },
                disabledContextMenu: function() {
                    window.oncontextmenu = function() {
                        return !1
                    }
                }
            })
        })(jQuery);
         
        function getSelect() {
            "" == (window.getSelection ? window.getSelection() : document.selection.createRange().text) ? alert("啊噢...你没还没选择文字呢！") : document.execCommand("Copy")
        }
        function baiduSearch() {
            var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
            "" == a ? alert("啊噢...你没还没选择文字呢！") : window.open("https://www.baidu.com/s?wd=" + a)
        }
        function googleSearch() {
            var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
            "" == a ? alert("啊噢...你没还没选择文字呢！") : window.open("https://www.google.com/search?q=" + a)
        }
        function localSearch() {
            var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
            "" == a ? alert("啊噢...你没还没选择文字呢！") : window.open("search.php?q=" + a)
        }
        $(function() {
            for (var a = navigator.userAgent, b = "Android;iPhone;SymbianOS;Windows Phone;iPad;iPod".split(";"), d = !0, c = 0; c < b.length; c++) if (0 < a.indexOf(b[c])) {
                d = !1;
                break
            }
            d && ($.mouseMoveShow(".usercm"), $.disabledContextMenu())
        });
        </script>