var names;
    function GetData() {
            $.ajax({
                data: "Action=GetParameterGroupNames",
                success: function(pgNames) {
                    pgNames = eval("(" + pgNames + ")");
                    names = pgNames;
                }
            });
        }
    function Bind1(names) {
            //......
        }

        function Bind2(names) {
            //......
        }
    $(document).ready(function() {
            $.ajaxSetup({
                url: "Handlers/FileHandler.ashx",
                async: true,
                cache: false,
                type: "GET",
                dataType: "text",
                processData: false,
                error: function(error) {
                    alert("出错了：" + error);
                }
            });
            GetData();
            Bind1(names);
        Bind2(names);
        });