function clsXmlIncrement() {
	var strSiteDomain = "http://www.xinchou.com.cn";
	var objIncrementXMLHttp = null;

	var createXMLHtpRqst = function () {
		var xmlHttp = null;
		if (window.XMLHttpRequest) {
			return (new XMLHttpRequest());
		} else {
			var arrAO = ['Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'Msxml2.XMLHTTP.3.0', 'Msxml2.XMLHTTP', 'Microsoft.XMLHTTP'];
			for (var i = 0; i < arrAO.length; i++) {
				try {
					xmlHttp = new ActiveXObject(arrAO[i]);
					break;
				} catch (e) {
					xmlHttp = null;
				}
			}
			return (xmlHttp);
		}
	};

	this.getIncrement = function (intType, strKeyword, intLength) {
		objIncrementXMLHttp = new createXMLHtpRqst();
		var arrModule = ['resource', 'bookshop', 'enquire', 'train'];
		if (intType >= arrModule.length) {
			document.write("错误的分类编号");
			return false;
		}

		if (objIncrementXMLHttp) {
			try {
				objIncrementXMLHttp.onreadystatechange = function () {
					if (objIncrementXMLHttp.readyState == 4) {
						if (objIncrementXMLHttp.status == 200) {
							var objNodes = objIncrementXMLHttp.responseXML.getElementsByTagName("item");
							var s = "";
							for (var i = 0; i < objNodes.length; i++) {
								s += '<div class="increment_item"><font>·</font><a href="' + objNodes[i].childNodes(1).text + '" target="_blank" class="link8">' + objNodes[i].childNodes(0).text + '</a></div>\r\n';
							}
							document.write (s);
							objIncrementXMLHttp = null;
						}
					}
				};
				objIncrementXMLHttp.open("get", strSiteDomain + "/" + arrModule[intType] + "/keyword.asp?k=" + strKeyword + "&l=" + intLength, false);
				objIncrementXMLHttp.send(null);
				return true;
			} catch (err) {
				document.write("数据下载失败 " + err.toString());
				return false;
			}
		}
	};
}