setTimeout用法

function faceSave() {
                                    if(confirm("确定保存？"))
                                        {
                                            showInfo("<img src='/images/loading.gif' /> 正在保存中，请稍后...", "");
                                            //几秒以后执行tosave()方法
                                            setTimeout("tosave()",2000);

}
                                       
                                }

function tosave() {
                                    var jsonfsave = jsonFace;
                                    for (var i = 0; i < jsonfsave.length; i++) {
                                        jsonfsave[i].Text = encodeURI(jsonfsave[i].Text);
                                        jsonfsave[i].FontType = encodeURI(jsonfsave[i].FontType);
                                    }
                                    $.ajax({
                                        url: '/ajaxpage/ajax.aspx',
                                        type: 'post',
                                        data: 'jsondata=' + JSON.stringify(jsonfsave) + '&op=putjson&delids=' + delids,
                                        dataType: 'json',
                                        success: function (data) {
                                            location.reload();

}
                                    });
                                }