var xmlHttp


function SearchFor(str)
{
if (str.length > 0)
   {
   var url="listdvds.php?query=" + str
   xmlHttp=GetXmlHttpObject(stateChanged)
   xmlHttp.open("GET", url , true)
   xmlHttp.send(null)
   }
   else
   {
   document.getElementById("txtHint").innerHTML=""
   }
}

function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
   {
   document.getElementById("txtHint").innerHTML=xmlHttp.responseText
   }
}

function GetXmlHttpObject(handler)
{
var objXmlHttp=null
if (navigator.userAgent.indexOf("Opera")>=0)
   {
    alert("This example doesn't work in Opera")
    return;
   }
if (navigator.userAgent.indexOf("MSIE")>=0)
   {
   var strName="Msxml2.XMLHTTP"
   if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
      {
      strName="Microsoft.XMLHTTP"
      }
   try
      {
      objXmlHttp=new ActiveXObject(strName)
      objXmlHttp.onreadystatechange=handler
      return objXmlHttp
      }
   catch(e)
      {
      alert("Error. Scripting for ActiveX might be disabled")
      return
      }
    }
if (navigator.userAgent.indexOf("Mozilla")>=0)
   {
   objXmlHttp=new XMLHttpRequest()
   objXmlHttp.onload=handler
   objXmlHttp.onerror=handler
   return objXmlHttp
   }
}