// JavaScript Document
var xmlHttp;

//function to register ajax
function registerAjax(){
	try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Your browser does not support AJAX!");
      return false;
      }
    }
  }	
}

function next(){
	ite++;
	if(ite>5){
		ite=5;
		return;
	}
	function update(){
		if(xmlHttp.readyState==4)
    	{
		  document.getElementById("bigImage").innerHTML = xmlHttp.responseText;
		  document.getElementById("thumbs").innerHTML = "<img src='portfolio/t"+ite+"_1.jpg' /><img src='portfolio/t"+ite+"_2.jpg' />";
     	}
    }
	xmlHttp.open("GET",ite+".php?&sid="+Math.random(),true);
  	xmlHttp.send(null);
	xmlHttp.onreadystatechange=update;
	document.getElementById("bigImage").innerHTML='<div style="vertical-align:middle; top:165px; position:relative;"><img src="loading.gif" /></div>';
}

function prev(){
	ite--;
	if(ite<1){
		ite=1;
		return;
	}
	function update(){
		if(xmlHttp.readyState==4)
    	{
		  document.getElementById("bigImage").innerHTML = xmlHttp.responseText;
		  document.getElementById("thumbs").innerHTML = "<img src='portfolio/t"+ite+"_1.jpg' /><img src='portfolio/t"+ite+"_2.jpg' />";
     	}
    }
	xmlHttp.open("GET",ite+".php?&sid="+Math.random(),true);
  	xmlHttp.send(null);
	xmlHttp.onreadystatechange=update;
	document.getElementById("bigImage").innerHTML='<p align="center"><img src="loading.gif" /></p>';
}