使用IE8进行Javascript settimeouts

Question

使用此Javascript代码，我收到此错误“对象不支持此属性或方法”错误。我检查了方法是否可用，并检查方法是否存在。我发错了多少个args？有没有人用过这个？

var xmlServerHttp = new ActiveXObject("Msxml2.ServerXMLHTTP.6.0");
var lResolve = 5 * 1000;
var lConnect = 5 * 1000;
var lSend = 15 * 1000;
var lReceive = 15 * 1000;
xmlServerHttp.setTimeouts(lResolve, lConnect, lSend, lReceive);
xmlServerHttp.open("GET", "http://localhost/sample.xml", false);
xmlServerHttp.send();