var xmlhttp;

function format(str)
{
  var replaceStr;
  for(i = 1; i < arguments.length; i++)
  {
    replaceStr = '{' + (i-1) + '}';
    
    str = str.replace(replaceStr, arguments[i]);
    
  }
  return str;
}

function performSearchJS()
{
    try 
    {       
        
        document.getElementById('stockResult').innerHTML="<img src='loading.gif'>";
        var itemId      = document.getElementById('itemid').value;
        var url = format('{0}?itemId={1}', "HGHStockPosition.aspx", itemId);
        xmlhttp=null;
        if (window.XMLHttpRequest)
        {
            xmlhttp=new XMLHttpRequest();
        }
        else
        {            
            xmlhttp=new ActiveXObject('Microsoft.XMLHTTP');
        }
        xmlhttp.onreadystatechange=onResponse;
        xmlhttp.open('GET',url,true);
        xmlhttp.send(null);

        document.getElementById('itemid').focus();
    } 
    catch (err) 
    {
        alert(err.description);
    }
}

function onResponse()
{
    if(xmlhttp.readyState!=4)
        return
    if(xmlhttp.status!=200 ) 
    {
        document.getElementById('stockResult').innerHTML="Service is unavailable. Please contact Xindao for stock information.";
        return;
    }
    var responseTxt = xmlhttp.responseText;

    document.getElementById('stockResult').innerHTML=responseTxt;

}