var loading = new Image(); 
loading.src = '/images/loading.gif';

var bustcachevar=1 
var loadedobjects=""
var rootdomain="http://"+window.location.hostname
var bustcacheparameter=""


function checkiffoto()
	{
	var url = document.location.href.split('#');
	if(!isNaN(url[1]))
		{
		nextfoto(url[1]);
		}
	}


document.onkeydown = function(e) 
	{
	if (!e) e = window.event;
	if (e.keyCode == 37)
		{
		var url = document.location.href.split('#'); 
		if((url[1]!="") && (isNaN(url[1])))
			{
			var url2 = document.location.href.split('/');
			var url3 = url2[4].split('-');
			ajaxnavigatie('down',url3[0]);
			} 
		else
			{
			ajaxnavigatie('down',url[1]);
			}
		}
	if (e.keyCode == 39)
		{
		var url = document.location.href.split('#');
		if((url[1]!="") && (isNaN(url[1])))
			{
			var url2 = document.location.href.split('/');
			var url3 = url2[4].split('-');
			ajaxnavigatie('up',url3[0]);
			}
		else
			{
			ajaxnavigatie('up',url[1]);
			}
		}
	}



function ajaxnavigatie(w,fotoID)
	{
	url = '/fotos/fotos_navigatie.php?w='+w+'&fotoID='+fotoID;
	var page_request = false
	if (window.XMLHttpRequest) 
		page_request = new XMLHttpRequest()
	else if (window.ActiveXObject)
		{ 
		try 
			{
			page_request = new ActiveXObject("Msxml2.XMLHTTP")
			} 
		catch (e)
			{
			try
				{
				page_request = new ActiveXObject("Microsoft.XMLHTTP")
				}
			catch (e){}
			}
		}
	else
		return false
	page_request.onreadystatechange=function()
		{
		if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
			{
			var fotonext = page_request.responseText;
			if(fotonext!="")
				{
				document.getElementById('foto_groot').innerHTML = '<img src="/images/loading.gif" style="margin:40px 0px 0px 300px;" />';
				nextfoto(fotonext);
				}
			}
		}
	if (bustcachevar) 
		bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', url+bustcacheparameter, true)
		page_request.send(null)
	}







function nextfoto(fotoID)
	{
	var url = '/fotos/fotos_request.php?ID='+fotoID;
	var page_request = false
	if (window.XMLHttpRequest) 
		page_request = new XMLHttpRequest()
	else if (window.ActiveXObject)
		{ 
		try 
			{
			page_request = new ActiveXObject("Msxml2.XMLHTTP")
			} 
		catch (e)
			{
			try
				{
				page_request = new ActiveXObject("Microsoft.XMLHTTP")
				}
			catch (e){}
			}
		}
	else
		return false
	page_request.onreadystatechange=function()
		{
		if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
			{
			var url = page_request.responseText.split('_____');
			document.getElementById('foto_groot').innerHTML = url[2];
			document.title = url[1];
			document.getElementById('foto_klein').innerHTML = url[0];
			var url = document.location.href.split('#');
			document.location.href = url[0]+'#'+fotoID; 
			}
		}
	if (bustcachevar) 
		bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', url+bustcacheparameter, true)
		page_request.send(null)
	}