var xmlHttp;
function change_page(lng, cid, smIndex)
   { 
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
       {
        alert ("Browser does not support HTTP Request");
        return;
       }              
var url="/guestbook_get.php";
url=url+"?smIndex="+escape(smIndex);
url=url+"&lng="+escape(lng);
url=url+"&cid="+escape(cid);
xmlHttp.open("GET",url,true);
xmlHttp.onreadystatechange=stateChanged; 
xmlHttp.send(null);
   }        
function stateChanged() 
   { 
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
       { 
        var response = xmlHttp.responseText;
        document.getElementById("item_list").innerHTML = response;
       } 
   }

function GetXmlHttpObject()
   {
    var xmlHttp=null;
    try
       {
        // Firefox, Opera 8.0+, Safari
        xmlHttp=new XMLHttpRequest();
       }
        catch (e)
       {
       //Internet Explorer
       try
          {
           xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
          }
           catch (e)
              {
               xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
              }
          }
    return xmlHttp;
   }