//VARIABLES
 
var xmlHttp;

//IMAGE COUNTER

var imageCount = 0; 

//XML LINK
var galleryFile;
//= "xml/whatever.xml"
var url;

function switchArtist (value){
	if(value == 'be'){
	loadPage('be.php','xml/be.xml');
	}
	else if (value == 'bw'){
	loadPage('bw.php','xml/bw.xml');
	}
	else if (value == 'news'){
	loadPage('news.php','xml/news.xml');
	}
	else if (value == 'le'){
	loadPage('le.php','xml/le.xml');
	}


}

function loadPage(page_url,gal_url){
	document.getElementById("iframe").src = page_url;
	galleryFile= gal_url;
	var x=document.forms.nav;
    x.reset();
	loadGallery();
}

function loadGallery(){
	//galleryFile = url;
	imageCount = 0;
	changeSrc(imageCount);
}


function nextImage(){
	imageCount ++;
	changeSrc(imageCount)
}


//SEND QUERY TO PHP SCRIPT

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

//RETURN XML

	function stateChanged() 
		{ 
		if (xmlHttp.readyState==4)
			{ 
			//document.getElementById("left").innerHTML=xmlHttp.responseText;
			window.top.document.getElementById("left").innerHTML=xmlHttp.responseText;
			//CHANGE COUNTER
			
			
			}
	}

//AJAX FUNCTIONS

	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;
	}