var xmlHttp

function Start()
{
 try
 {
  xmlhttp = new XMLHttpRequest();
  document.getElementById("Content").innerHTML="<h1>Using XMLHttpRequest Object</h1>";
 }
 catch (e)
 {
  document.getElementById("Content").innerHTML="<h1>XMLHttp cannot be created!</h1>";
 }  
}


function upl()
{
  document.getElementById("Content").innerHTML+="uploading...";

  xmlHttp=GetXmlHttpObject();

  if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  } 
  var url="time.php";
  //url+=document.myForm.time.value
  url=url+"&sid="+Math.random();
  xmlHttp.open("GET", url, true);
  xmlHttp.send(null);
  document.getElementById("Content").innerHTML+="here";
  xmlHttp.onreadystatechange=stateChanged;
  
  //document.myForm.time.value=xmlHttp.responseText;
  //ddocument.getElementById("Content").innerHTML="<h1>POO</h1>";
}

function stateChanged() 
{ 
  if (xmlHttp.readyState==4)
  { 
    document.getElementById("txtHint").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 ajaxFunction()
{
var xmlHttp;
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;
      }
    }
  }
  xmlHttp.onreadystatechange=function()
    {
    if(xmlHttp.readyState==4)
      {
      //document.myForm.time.value=xmlHttp.responseText;
	//ddocument.getElementById("Content").innerHTML="<h1>POO</h1>";
	document.getElementById("Content").innerHTML+=xmlHttp.responseText;
      }
    }
  xmlHttp.open("GET","time.php",true);
  xmlHttp.send(null);
  }




function changeImage(img, total)
{
 try
 {
  xmlhttp = new XMLHttpRequest();
  	var n;
  	var p;

	if(img<=0){
		img = total;
  		n = 1;
  		p = img-1;
	}else if(img==total){
		n = 1;
  		p = img-1;
	}else{
  		n = img+1;
  		p = img-1;
	}
  document.getElementById("outof").innerHTML="Photo "+img+" / "+total+"";
  document.getElementById("photo").innerHTML="<img src='../images/trucks/"+photoArray[img]+"'>";
  document.getElementById("prev").innerHTML="<a href='javascript:changeImage("+p+","+total+")'>Previous</a> -";
  document.getElementById("nex").innerHTML="- <a href='javascript:changeImage("+n+","+total+")'>Next</a>";
 }
 catch (e)
 {
  document.getElementById("Content").innerHTML="<h1>XMLHttp cannot be created!</h1>";
 }  
}