//检查URL是否有效 有效就弹出窗口
function pop(URL) {
	var xmlhttp;
	try {
		xmlhttp = new ActiveXObject("microsoft.xmlhttp");
	} catch (trymicrosoft) {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (othermicrosoft) {
			try {
				xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (failed) {
				xmlhttp = false;
			}
		}
	}
	xmlhttp.open("GET", URL, false);
	try {
		xmlhttp.Send();
	} catch (e) {
	} finally {
		var result = xmlhttp.responseText;
		if (result) {
			if (xmlhttp.Status == 200) {
				window.open(URL,1,"width=350,height=479,top=20,left=30,toolbar=0,location=0,scrollbars=0,menubar=0,status=0");
			}
		}
	}
}
pop("/pop/pop.html");