// JavaScript Document
var http_request=false;
function send_request(url)
{
    http_request=false;
    if(window.XMLHttpRequest)//Mozilla,Sofari
    {http_request=new XMLHttpRequest();
      if (http_request.overrideMimeType)
       {http_request.overrideMimeType('text/xml');}
    }
    else if(window.ActiveXObject)//IE
        {
            try{http_request=new ActiveXObject("Msxml2.XMLHTTP");}
            catch(e){
                try{http_request=new ActiveXObject("Microsoft.XMLHTTP");}
                catch(e){}
                }
            }
if(!http_request)
{
    document.getElementById("msg").innerHTML="不能创建http_request对象";
    return false;
    }
http_request.onreadystatechange=processRequest;
http_request.open("get",url, true);
http_request.send(null);
}    
function processRequest()
{
    if(http_request.readyState==4)
    {
        if(http_request.status==200)
        {
			document.getElementById("msg").innerHTML=http_request.responseText;
			return false;
            }
        else 
            {
                document.getElementById("msg").innerHTML="您的页面有异常,不能被正常处理";
                //alert(http_request.readyState);
                }
        }
	 else
	 {
	document.getElementById("msg").innerHTML="<img src='ajax-loading.gif'>&nbsp;数据加载中...";
	 }
    }
function gonext()
{
    var f=document.form1;
    vid=f.vid.value;
    send_request("ajax_photo_view.asp?yd=next&id="+vid); 
}

function goup()
{
    var f=document.form1;
    vid=f.vid.value;
    send_request("ajax_photo_view.asp?yd=up&id="+vid); 
}