var xmlhttp4;

function updatePageContent(id,pageId,divName,phpFileName)
{
xmlhttp4=GetXmlHttpObject();
if (xmlhttp4==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url=phpFileName;
url=url+"?gid="+id;
url=url+"&page="+pageId;
url=url+"&sid="+Math.random();
//xmlhttp.onreadystatechange=stateChanged;
xmlhttp4.onreadystatechange=function(){stateChanged4(divName)}
xmlhttp4.open("GET",url,true);
xmlhttp4.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlhttp4.setRequestHeader("Content-Type", "text/xml; charset=iso-8859-1"); 
xmlhttp4.send(null);
}

function stateChanged4(divName)
{
if (xmlhttp.readyState==4)
{
//alert(divName);
document.getElementById(divName).innerHTML=xmlhttp4.responseText;
}
}

function GetXmlHttpObject()
{
var xmlHttp4=null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp4=new XMLHttpRequest();
xmlHttp4.overrideMimeType('text/xml; charset=iso-8859-1'); //NO CHARACTER PROBLEM IN MOZILLA
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp4=new ActiveXObject("Msxml2.XMLHTTP");
xmlHttp4.overrideMimeType('text/xml; charset=iso-8859-1'); // THIS DOES NOT WORK, I"VE COMMENTED IT
}
catch (e)
{
xmlHttp4=new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp4;
}