// 控制按钮常量
    var MB_OK = 0;
    var MB_CANCEL = 1;
    var MB_OKCANCEL = 2;
    var MB_YES = 3;
    var MB_NO = 4;
    var MB_YESNO = 5;
    var MB_YESNOCANCEL = 6;
    // 控制按钮文本
    var MB_OK_TEXT = "确定";
    var MB_CANCEL_TEXT = "取消";
    var MB_YES_TEXT = " 是 ";
    var MB_NO_TEXT = " 否 ";
    //提示图标
    var MB_ICON = "Images/favicon.ico";
    //委托方法
    var MB_OK_METHOD = null;
    var MB_CANCEL_METHOD = null;
    var MB_YES_METHOD = null;
    var MB_NO_METHOD = null;
    var MB_BACKCALL = null;
    var MB_STR = '<style type="text/css"><!--' +
			'body{margin:0px;}' +
			'.msgbox_title{background-color: #B1CDF3;height:25px;position:relative;font-size:14px;line-height:25px;padding-left:10px;border-bottom:1px solid #000;}' +
			'.msgbox_control{text-align:center;clear:both;height:28px;}' +
			'.msgbox_button{background-color: #B1CDF3;border:1px solid #003366;font-size:12px;line-height:20px;height:21px;}' +
			'.msgbox_content{padding:10px;float:left;line-height: 20px;}' +
			'.msgbox_icon{width: 50px;height: 50px;float: left;text-align: center;line-height:50px;padding-top:10px;}' +
			'.msgbox_mask{position:absolute;left:0px;top:0px;z-index:99999;background-color:#333333;width:100%;height:100%;}' +
			'.msgbox{background-color: #EFFAFE;position: absolute;height:auto;font-size:12px;top:50%;left:50%;border:1px solid #999999;}' +
			'--></style>' +
			'<div id="msgBoxMask" class="msgbox_mask" style="filter: alpha(opacity=0);display:none;"></div>' +
			'<div class="msgbox" style="display:none; z-index:100000;" id="msgBox">' +
			'<div class="msgbox_title" id="msgBoxTitle"></div>' +
			'<div class="msgbox_icon" id="msgBoxIcon"></div>' +
			'<div class="msgbox_content" id="msgBoxContent"></div>' +
			'<div class="msgbox_control" id="msgBoxControl"></div></div>';
    var Timer = null;
    document.write(MB_STR);
    var icon = new Image();
    icon.src = MB_ICON;
    /* 提示对话框
    * 参数 1 : 提示内容
    * 参数 2 : 提示标题
    * 参数 3 : 图标路径
    * 参数 4 : 按钮类型
    */
    function MessageBox() {
        var _content = arguments[0] || "这是一个对话框！";
        var _title = arguments[1] || "提示";
        var _icon = arguments[2] || MB_ICON;
        var _button = arguments[3] || MB_OK;
        MB_BACKCALL = arguments[4];

        var _iconStr = '<img src="{0}">';
        var _btnStr = '<input name="{0}" id="{0}" type="button" class="msgbox_button" value="{1}" onclick="MBMethod(this)" />';


        switch (_button) {
            case MB_CANCEL: _btnStr = _btnStr.toFormatString("msgBoxBtnCancel", MB_CANCEL_TEXT); break;

            case MB_YES: _btnStr = _btnStr.toFormatString("msgBoxBtnYes", MB_YES_TEXT); break;

            case MB_NO: _btnStr = _btnStr.toFormatString("msgBoxBtnNo", MB_NO_TEXT); break;

            case MB_OKCANCEL:
                _btnStr = _btnStr.toFormatString("msgBoxBtnOk", MB_OK_TEXT) + "&nbsp;&nbsp;" +
 		             _btnStr.toFormatString("msgBoxBtnCancel", MB_CANCEL_TEXT);
                break;

            case MB_YESNO:
                _btnStr = _btnStr.toFormatString("msgBoxBtnYes", MB_YES_TEXT) + "&nbsp;&nbsp;" +
		              _btnStr.toFormatString("msgBoxBtnNo", MB_NO_TEXT);
                break;

            case MB_YESNOCANCEL:
                _btnStr = _btnStr.toFormatString("msgBoxBtnYes", MB_YES_TEXT) + "&nbsp;&nbsp;" +
		              _btnStr.toFormatString("msgBoxBtnNo", MB_NO_TEXT) + "&nbsp;&nbsp;" +
					  _btnStr.toFormatString("msgBoxBtnCancel", MB_CANCEL_TEXT);
                break;

            default: _btnStr = _btnStr.toFormatString("msgBoxBtnOk", MB_OK_TEXT); break;

        }
        //解决　FF 下会复位
        ScrollTop = GetBrowserDocument().scrollTop;
        ScrollLeft = GetBrowserDocument().scrollLeft;
        GetBrowserDocument().style.overflow = "hidden";
        GetBrowserDocument().scrollTop = ScrollTop;
        GetBrowserDocument().scrollLeft = ScrollLeft;

        $("msgBoxTitle").innerHTML = _title;
        $("msgBoxIcon").innerHTML = _iconStr.toFormatString(_icon);
        $("msgBoxContent").innerHTML = _content;
        $("msgBoxControl").innerHTML = _btnStr;

        OpacityValue = 0;
        $("msgBox").style.display = "";
        try { $("msgBoxMask").filters("alpha").opacity = 0; } catch (e) { };
        $("msgBoxMask").style.opacity = 0;
        $("msgBoxMask").style.display = "";
        $("msgBoxMask").style.height = GetBrowserDocument().scrollHeight + "px";
        $("msgBoxMask").style.width = GetBrowserDocument().scrollWidth + "px";

        Timer = setInterval("DoAlpha()", 1);
        //设置位置   
        $("msgBox").style.width = "100%";
        $("msgBox").style.width = ($("msgBoxIcon").offsetWidth + $("msgBoxContent").offsetWidth + 2) + "px";

        $("msgBox").style.marginTop = (-$("msgBox").offsetHeight / 2 + GetBrowserDocument().scrollTop) + "px";
        $("msgBox").style.marginLeft = (-$("msgBox").offsetWidth / 2 + GetBrowserDocument().scrollLeft) + "px";

        if (_button == MB_OK || _button == MB_OKCANCEL) {
            $("msgBoxBtnOk").focus();
        } else if (_button == MB_YES || _button == MB_YESNO || _button == MB_YESNOCANCEL) {
            $("msgBoxBtnYes").focus();
        }
    }
    var OpacityValue = 0;
    var ScrollTop = 0;
    var ScrollLeft = 0;
    function GetBrowserDocument() {
        var _dcw = document.documentElement.clientHeight;
        var _dow = document.documentElement.offsetHeight;
        var _bcw = document.body.clientHeight;
        var _bow = document.body.offsetHeight;

        if (_dcw == 0) return document.body;
        if (_dcw == _dow) return document.documentElement;

        if (_bcw == _bow && _dcw != 0)
            return document.documentElement;
        else
            return document.body;
    }
    function SetOpacity(obj, opacity) {
        if (opacity >= 1) opacity = opacity / 100;

        try { obj.style.opacity = opacity; } catch (e) { }

        try {
            if (obj.filters) {
                obj.filters("alpha").opacity = opacity * 100;
            }

        } catch (e) { }
    }

    function DoAlpha() {
        if (OpacityValue > 20) { clearInterval(Timer); return 0; }
        OpacityValue += 5;
        SetOpacity($("msgBoxMask"), OpacityValue);
    }
    function MBMethod(obj) {
        switch (obj.id) {
            case "msgBoxBtnOk": if (MB_BACKCALL) { MB_BACKCALL(MB_OK); } else { if (MB_OK_METHOD) MB_OK_METHOD(); } break;
            case "msgBoxBtnCancel": if (MB_BACKCALL) { MB_BACKCALL(MB_CANCEL); } else { if (MB_CANCEL_METHOD) MB_CANCEL_METHOD(); } break;
            case "msgBoxBtnYes": if (MB_BACKCALL) { MB_BACKCALL(MB_YES); } else { if (MB_YES_METHOD) MB_YES_METHOD(); } break;
            case "msgBoxBtnNo": if (MB_BACKCALL) { MB_BACKCALL(MB_NO); } else { if (MB_NO_METHOD) MB_NO_METHOD(); } break;
        }

        MB_OK_METHOD = null;
        MB_CANCEL_METHOD = null;
        MB_YES_METHOD = null;
        MB_NO_METHOD = null;
        MB_BACKCALL = null;

        MB_OK_TEXT = "确定";
        MB_CANCEL_TEXT = "取消";
        MB_YES_TEXT = " 是 ";
        MB_NO_TEXT = " 否 ";

        $("msgBox").style.display = "none";
        $("msgBoxMask").style.display = "none";
        GetBrowserDocument().style.overflow = "";
        GetBrowserDocument().scrollTop = ScrollTop;
        GetBrowserDocument().scrollLeft = ScrollLeft;
    }
    String.prototype.toFormatString = function () {
        var _str = this;
        for (var i = 0; i < arguments.length; i++) {
            _str = eval("_str.replace(/\\{" + i + "\\}/ig,'" + arguments[i] + "')");
        }
        return _str;
    }
    function $(obj) {
        return document.getElementById(obj);
    }