function createXMLHTTP() 
{
  var request;
  var browser = navigator.appName;
  //使用IE，则使用XMLHttp对象
  if(browser == "Microsoft Internet Explorer") 
  {
    var arrVersions = ["Microsoft.XMLHttp", "MSXML2.XMLHttp.4.0",
      "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp","MSXML2.XMLHttp.5.0"];
    for (var i=0; i < arrVersions.length; i++) 
    {
      try 
      {
    //从中找到一个支持的版本并建立XMLHttp对象
        request = new ActiveXObject(arrVersions[i]); 
        return request;
      } 
      catch(exception)
      {
         //忽略，继续
      }
    }
  }
  else
  {
    //否则返回一个XMLHttpRequest对象
    request = new XMLHttpRequest(); 
    return request;
  }   
}
var req=createXMLHTTP();
var reqch=createXMLHTTP();
//ajax开始处
function ch(url,images,title){
	linkk=url.replace("&","|")
    var url="../anjuoke/ajaxshow.php?value="+linkk+"&images="+images+"&title="+title;
    if(req){
    req.open("GET",url,true);
    req.onreadystatechange=processRequest; 
    req.send(null); 
        }
    }
function processRequest()
{
  if(req.readyState == 4) 
  { 
    if(req.status == 200)
    { 
      //XML DOM操作，取出city标记节点
      var strStatus=(req.responseText).toString();
    document.getElementById("imageshow").innerHTML=strStatus
     
    }
   /* else
    {
      alert("请求页面发生异常!");
    }*/     
  }
}