function do_verify(str) {
   // var segment10 = document.rgfrm.uEmail.value;
    xmlHttp = createXMLHttpRequest();
	
    var url = "/SearchSchool_City.php?cityid="+str;
   //alert("dot"+str);
    xmlHttp.onreadystatechange = handleReadyStateChange;
    xmlHttp.open("get", url, true);　//传递数据的方法同样有GET和POST两种,但是当方法为POST时下面的一句话就必须写
    xmlHttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
    xmlHttp.send(null);
}
function handleReadyStateChange() {

    if (xmlHttp.readyState == 4) {
        if (xmlHttp.status == 200) {
		
			if (xmlHttp.responseText) {
				
               // document.getElementById(xmlHttp.responseText).style.display = "block"
				document.getElementById('universityBox').innerHTML = xmlHttp.responseText;
				//do_map(str);
            }
			/*
			else {
                document.getElementById(targetName).style.display = "block"
				document.getElementById(targetName).innerHTML = '<font color="#FF0000">Unread</font>';
            }
			*/
        } else {
            alert(xmlHttp.status);
        }
    }
}