function BomHelper() {
    this.ie = "";
    this.firefox = "";
    this.chrome = "";
    this.opera = "";
    this.safari = "";
}
//检测浏览器版本，并保存
BomHelper.prototype.checkBrowerType = function() {
    var ua = navigator.userAgent.toLowerCase();
    var s;
    (s = ua.match(/msie ([\d.]+)/)) ? this.ie = s[1] :
    (s = ua.match(/firefox\/([\d.]+)/)) ? this.firefox = s[1] :
    (s = ua.match(/chrome\/([\d.]+)/)) ? this.chrome = s[1] :
    (s = ua.match(/opera.([\d.]+)/)) ? this.opera = s[1] :
    (s = ua.match(/version\/([\d.]+).*safari/)) ? this.safari = s[1] : 0;
}
//获取ajax对象
BomHelper.prototype.ajaxObj = function() {
    if (typeof XMLHttpRequest != "undefined") return new XMLHttpRequest();
    var xmlHttp = null;
    if (this.ie != "") {
        try {
            xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (ex1) {
            try {
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (ex2) {
                alert("创建ajax对象失败,本网站只支持ie6以上版本浏览器,请刷新页面重试");
            }
        }
    } else {
        try {
            xmlHttp = new XMLHttpRequest();
        } catch (ex3) {
            alert("创建ajax对象失败,请刷新页面重试");
        }
    }
    return xmlHttp;
}
//发送ajax的GET请求
BomHelper.prototype.ajaxGet = function(sUrl, fnAjax) {
    var xmlHttp = this.ajaxObj();
    xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState == 4)
            fnAjax(xmlHttp.responseText);
    }
    if (sUrl.indexOf("?") == -1)
        sUrl = sUrl + "?flesh=" + Math.random();
    else
        sUrl = sUrl + "&flesh=" + Math.random();
    xmlHttp.open("GET", sUrl, true);
    xmlHttp.send(null);
}
//发送ajax的post请求
BomHelper.prototype.ajaxPost = function(sUrl, sPostData, fnAjax) {
    var xmlHttp = this.ajaxObj();

    xmlHttp.onreadystatechange = function() {
        if (xmlHttp.readyState == 4)
            fnAjax(xmlHttp.responseText);
    }
    if (sPostData == "")
        sPostData = sPostData + "flesh=" + Math.random();
    else
        sPostData = sPostData + "&flesh=" + Math.random();
    xmlHttp.open("POST", sUrl, true);
    xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    xmlHttp.send(sPostData);
}
//若是IE7以上版本，则要求它使用IE7
BomHelper.prototype.useIE7 = function() {
    document.write("<meta content=\"IE=EmulateIE7\" http-equiv=\"X-UA-Compatible\">");
}

BomHelper.prototype.SetAttributeClass = function(dom, className) {
    if (bomHelper.ie != "" && parseFloat(bomHelper.ie) < 8)
        dom.setAttribute("className", className);
    else dom.setAttribute("class", className);
}

var bomHelper = new BomHelper();
bomHelper.checkBrowerType();

//JS去除空格
String.prototype.Trim = function() {
    return this.replace(/(^\s*)|(\s*$)/g, "");
}

//
function Q(id) {
    this.obj = document.getElementById(id);
}

Q.prototype.GetValue = function() {
    return this.obj.value.Trim();
}

Q.prototype.SetValue = function(val) {
    this.obj.value = val;
}
Q.prototype.GetSelectedValue = function() {
    return this.obj.options[this.obj.selectedIndex].value;
}
Q.prototype.SetSelectedIndex = function(index) {
    this.obj.options[index].selected = true;
}
Q.prototype.SetSelectedByVal = function(val) {
    var len = this.obj.options.length;
    for (var i = 0; i < len; i++) {
        if (this.obj.options[i].value == val) {
            this.SetSelectedIndex(i);
            break;
        }
    }
}
Q.prototype.AddSelectItem = function(value, text) {
    this.obj.options.add(new Option(text, value));
}

Q.prototype.RemoveItem = function(index) {
    this.obj.options.remove(index);
}

Q.prototype.RemoveItemByVal = function(val) {
    for (var i = 0; i < this.obj.options.length; i++) {
        if (this.obj.options[i].value == val) {
            this.obj.options.remove(i);
            break;
        }
    }
}

Q.prototype.RemoveAllItems = function() {
    for (var i = this.obj.options.length - 1; i >= 0; i--) {
        this.obj.options.remove(i);
    }
}