function fields(fieldName) {
  return document.getElementById(fieldName);
}
function showProgressBar() {
  var obj = fields("content")
  obj.innerHTML='<table width="500" height="380" border="0" align="center"><tr><td align="center"><img src="index/loader.gif" /></td></tr><tr><td>&nbsp;</td></tr></table>';
}

function portfolio()
{
fields('vars').value='button=1';
loadSubPage('1','1');
}
function services()
{
fields('vars').value='button=2';
loadPage('2');
}
function support()
{
fields('vars').value='button=3';
loadPage('3');
}
function hosting()
{
fields('vars').value='button=4';
loadPage('4');
}
function contacts()
{
fields('vars').value='button=5';
loadPage('5');
}
function templates()
{
fields('vars').value='button=2';
loadPage('templates');
}
function getstarted()
{
fields('vars').value='button=3';
loadPage('getstarted');
}
function company()
{
fields('vars').value='button=0';
loadPage('0');
}

var xmlHttp

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


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

function stateChanged() 
{ 
if (xmlHttp.readyState==4)
{
fields("content").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;
}