String.prototype.len = function () {
    return this.replace(/[^\x00-\xff]/g, "aa").length;
};
String.prototype.trim = function () {
    return this.replace(/(^ *)|( *$)/g, "");
};
String.prototype.htmlencode = function () {
    return this.replace(/[<>"']+/g, "");
};
String.prototype.encode = function () {
    return escape(encodeURIComponent(this));
};
String.prototype.left = function (length) {
    if (this.len() > length) {
        var _temp = this;
        _temp = _temp.replace(/([^\x00-\xff])/g, "$1>");
        _temp = _temp.substring(0, length - 2) + "..";
        return _temp.replace(/>/g, "");
    } else {
        return this.toString();
    }
};
Element.prototype.show = function () {
    this.style.display = "block";
};
Element.prototype.hide = function () {
    this.style.display = "none";
};
Element.prototype.center = function (top) {
    this.style.left = (_system._scroll().x + _system._zero(_system._client().bw - this.offsetWidth) / 2) + "px";
    this.style.top = (top ? top : (_system._scroll().y + _system._zero(_system._client().bh - this.offsetHeight) / 2)) + "px";
};
var _system = {
    _client: function () {
        return {
            w: document.documentElement.scrollWidth,
            h: document.documentElement.scrollHeight,
            bw: document.documentElement.clientWidth,
            bh: document.documentElement.clientHeight
        };
    },
    _scroll: function () {
        return {
            x: document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft,
            y: document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop
        };
    },
    _cover: function (show) {
        if (show) {
            $("cover").show();
            $("cover").style.width = (this._client().bw > this._client().w ? this._client().bw : this._client().w) + "px";
            $("cover").style.height = (this._client().bh > this._client().h ? this._client().bh : this._client().h) + "px";
        } else {
            $("cover").hide();
        }
    },
    _loading: function (text) {
        if (text) {
            this._cover(true);
            $("loading").show();
            $("loading_text").innerHTML = text;
            $("loading").center();
            window.onresize = function () {
                _system._cover(true);
                $("loading").center();
            };
        } else {
            this._cover(false);
            $("loading").hide();
            window.onresize = null;
        }
    },
    _toast: function (text, fun) {
        $("toast").show();
        $("toast").innerHTML = text;
        $("toast").center();
        setTimeout(function () {
            $("toast").hide();
            if (fun) {
                (fun)();
            }
        }, 3 * 1000);
    },
    _ok: function (text, fun) {
        $("ok").show();
        $("ok_text").innerHTML = text;
        $("ok").center();
        window.onresize = function () {
            $("ok").center();
        };
        setTimeout(function () {
            window.onresize = null;
            $("ok").hide();
            (fun)();
        }, 2 * 1000);
    },
    _guide: function (show) {
        this._cover(true);
        $("guide").show();
        window.onresize = function () {
            _system._cover(true);
        };
        if (show) {
            $("cover").onclick = _system._guideHide;
            $("guide_button").hide();
            $("guide_button2").show();
        } else {
            $("guide_button").show();
            $("guide_button2").hide();
        }
    },
    _guideHide: function () {
        _system._cover();
        $("guide").hide();
        $("cover").onclick = null;
        window.onresize = null;
    },
    _guide2: function () {
        if (_cookie._get("GUIDE2") != "") {
            return;
        }
        this._cover(true);
        $("guide2").show();
        window.onresize = function () {
            _system._cover(true);
        };
        setTimeout(function () {
            _system._cover();
            $("guide2").hide();
            $("cover").onclick = null;
            window.onresize = null;
            _cookie._set("GUIDE2", "1", 60 * 60 * 24 * 30);
        }, 5 * 1000);
    },
    _zero: function (n) {
        return n < 0 ? 0 : n;
    },
    _forbidden: function (text) {
        return false;
    }
};



var _cookie = {
    _set: function (name, value, expires) {
        if (expires) {
            var _end = new Date();
            _end.setTime(_end.getTime() + (expires * 1000));
        }
        document.cookie = name + "=" + escape(value) + (expires ? ";expires=" + _end.toGMTString() : "") + "; path=/";
    },
    _get: function (name) {
        var _cookie = document.cookie;
        var _start = _cookie.indexOf(name + "=");
        if (_start != -1) {
            _start += name.length + 1;
            var _end = _cookie.indexOf(";", _start);
            if (_end == -1) {
                _end = _cookie.length;
            }
            return unescape(_cookie.substring(_start, _end));
        }
        return "";
    }
};
var _$ = function (url, parameters, loadingMessage, functionName) {
    var request = new XMLHttpRequest();
    if (loadingMessage != "") {
        _system._loading(loadingMessage);
    }
    var method = "POST";
    if (parameters == "") {
        method = "GET";
        parameters = null;
    }
    request.open(method, url, true);
    request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    request.onreadystatechange = function () {
        if (request.readyState == 4) {
            if (loadingMessage != "") {
                _system._loading();
            }
            if (request.status == 200) {
                if (functionName) {
                    try {
                        var json = eval("(" + request.responseText + ")");
                        eval(functionName + "(json)");
                    } catch (e) {
                    }
                }
            } else {
                if (loadingMessage != "") {
                    _system._toast("发生意外错误，请稍候再试");
                }
            }
        }
    };
    request.send(parameters);
};
(function () {
    if (document.referrer != "") {
        _system._guide2();
    }
    if (location.href.toString().indexOf("pre=true") != -1) {
        setInterval(function () {
            $("guide3").show();
            setTimeout(function () {
                $("guide3").hide();
            }, 500);
        }, 1000);
    }
})();