var xmlHttp

function showPage(str)
{
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
    {
        alert ("Your browser does not support AJAX!");
        return;
    } 
    var url="showpage.php";
    url = url+"?q="+str;
    url = url+"&sid="+Math.random();
    xmlHttp.onreadystatechange = stateChanged;
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
} 

/*
State	Description
0	The request is not initialized
1	The request has been set up
2	The request has been sent
3	The request is in process
4	The request is complete
*/
function stateChanged() 
{ 
    if (xmlHttp.readyState==0) //not initialized
    { 
         document.getElementById("showPage").innerHTML="not init...";
    }
    if (xmlHttp.readyState==1) //The request has been set up
    { 
         document.getElementById("showPage").innerHTML="<div id='loading'><img src='img/loadingAnime.gif' /></div>";
    }
    if (xmlHttp.readyState==2) // been sent
    { 
         document.getElementById("showPage").innerHTML="sent...";
    }
    if (xmlHttp.readyState==3) //in process
    { 
         document.getElementById("showPage").innerHTML="in process...";
    }
    if (xmlHttp.readyState==4) //complete
    { 
        document.getElementById("showPage").innerHTML=xmlHttp.responseText;
    }
}

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;
}

/*
function showPage()
{
    document.getElementById("showPage").innerHTML="ahahahahah";
}
*/