var xmlHttp = null;
//
function IsRepeat(Url, Par, ConID) {
    xmlHttp = GetXmlHttpObject();
    if (xmlHttp == null) {
        alert("您的浏览器不支持AJAX！");
        return;
    }
    if (Url == "")
        return;
    var str = "";
    xmlHttp.onreadystatechange = function() { str = stateChanged(ConID) };
    xmlHttp.open("Post", Url, true);
    xmlHttp.send(null);
   //  alert(str);
    return str;
}
function stateChanged(ConID) {
    if (xmlHttp.readyState == 4 && xmlHttp.status == 200) {
        return xmlHttp.responseText;     
      //  $(ConID).innerHTML = xmlHttp.responseText;
    }
}
function GetXmlHttpObject() {
    var XmlHttpObj = null;
    try {
        if (window.ActiveXObject) {
            for (var i = 105; i; i--) {
                try {
                    if (i == 2) {
                        XmlHttpObj = new ActiveXObject("Microsoft.XMLHTTP");
                    }
                    else {
                        XmlHttpObj = new ActiveXObject("Msxml2.XMLHTTP." + i + ".0");
                    }
                    XmlHttpObj.setRequestHeader("Content-Type", "text/xml");
                    XmlHttpObj.setRequestHeader("Content-Type", "utf-8");
                    break;
                }
                catch (e)
				{ }
            }
        }
        else if (window.XMLHttpRequest) {
            XmlHttpObj = new XMLHttpRequest();
            if (XmlHttpObj.overrideMimeType) {
                XmlHttpObj.overrideMimeType('text/xml');
            }
        }
    }
    catch (e)
	{ }
    return XmlHttpObj;
}