//cookies存储select选定值，防止刷新后没了

    window.onload = function () {

    var cooki = document.cookie;

    if (cooki != "") {

    cooki = "{\"" + cooki + "\"}";

    cooki = cooki.replace(/\s*/g, "").replace(/=/g, '":"').replace(/;/g, '","');

    var json = eval("(" + cooki + ")"); //将coolies转成json对象

    document.getElementById("pselect").options[json.selIndex].selected = true;//保持原来的选项

    }else

    save();

    } 

    function selectP(){

        var options=$("#pselect option:selected");

        var selectP=options.val();

        selectIndex = document.getElementById("pselect").selectedIndex;

        document.cookie = 'selIndex =' + selectIndex;//保存在cookie中，键名为selIndex 

        //alert(p);

        $.ajax(

                {

                   type:"post",

                   url:"<%=basePath%>servlet/UserServlet",

                   data:"oper=6&selectP=" + selectP,

                   success:function(data) {

                       //alert(data);

                         location.reload();

                   }

                });

    }