var browserType;

if (document.layers) {browserType = "nn4"}
if (document.all) {browserType = "ie"}
if (window.navigator.userAgent.toLowerCase().match("gecko")) {
 browserType= "gecko"
}
var lastid = 0;


function changeimg(i) {
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("bild" + i)');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("bild" + i)');
		else
			document.poppedLayer = eval('document.layers["bild" + i]');
		document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[i] ;
		
	
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("linkbigimg")');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("linkbigimg")');
		else
			document.poppedLayer = eval('document.layers["linkbigimg"]');
		document.poppedLayer.title =  desc[i] ;
	
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("imgbig")');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("imgbig")');
		else
			document.poppedLayer = eval('document.layers["imgbig"]');
		document.poppedLayer.src = 'index.php?rex_resize=605a__' + images[i] ;
		
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("linkbigimg")');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("linkbigimg")');
		else
			document.poppedLayer = eval('document.layers["linkbigimg"]');
		document.poppedLayer.href = 'index.php?rex_resize=1000a__' + images[i];
		
		
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("bild" + lastid)');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("bild" + lastid)');
		else
			document.poppedLayer = eval('document.layers["bild" + lastid]');
		document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[lastid] + '&rex_filter[]=gray&rex_filter[]=brightness&rex_filter[brightness]=67';
		lastid= i;
		
}    
function change(i) {
	if(lastid != i){
		if (browserType == "gecko")
			document.poppedLayer = 	eval('document.getElementById("bild" + i)');
		else if (browserType == "ie")
			document.poppedLayer = eval('document.getElementById("bild" + i)');
		else
			document.poppedLayer = eval('document.layers["bild" + i]');
		document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[i] + '&rex_filter[]=gray&rex_filter[]=brightness&rex_filter[brightness]=67';
	}

}

function changepage(i){
	var u = 0;
	if(maxpages>1){
		for(u=1;u<=maxpages;++u){
			if(i==u){
				show('gal-top' + u);
				markpage(u);
			}else{
				hide('gal-top' + u);
				demarkpage(u);
			}
		}
	}

}

function hide(id) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(id)');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(id)');
  else
     document.poppedLayer =   
        eval('document.layers[id]');
  document.poppedLayer.style.display = "none";
}

function show(id) {
  if (browserType == "gecko" )
     document.poppedLayer = 
         eval('document.getElementById(id)');
  else if (browserType == "ie")
     document.poppedLayer = 
        eval('document.getElementById(id)');
  else
     document.poppedLayer = 
         eval('document.layers[id]');
  document.poppedLayer.style.display = "inline";
}

function markpage(i){
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("page" + i)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("page" + i)');
	else
		document.poppedLayer = eval('document.layers["page" + i]');
	document.poppedLayer.className='active';
}


function demarkpage(i){
		if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("page" + i)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("page" + i)');
	else
		document.poppedLayer = eval('document.layers["page" + i]');
	document.poppedLayer.className ='';

}


function zuruck(){
	var i;
	i = parseInt(lastid)-1;
	if(i < 0){
		i= images.length-1;
	}
	changepage(Math.floor(i/maximages)+1);
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("bild" + i)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("bild" + i)');
	else
		document.poppedLayer = eval('document.layers["bild" + i]');
	document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[i] ;
	
	
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("imgbig")');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("imgbig")');
	else
		document.poppedLayer = eval('document.layers["imgbig"]');
	document.poppedLayer.src = 'index.php?rex_resize=605a__' + images[i] ;
	
	
	
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("bild" + lastid)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("bild" + lastid)');
	else
		document.poppedLayer = eval('document.layers["bild" + lastid]');
	document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[lastid] + '&rex_filter[]=gray&rex_filter[]=brightness&rex_filter[brightness]=67';
	lastid= i;
}


function weiter(){
	var i;
	i = parseInt(lastid)+1;
	if(i >= images.length){
		i=0;
	}
	changepage(Math.floor(i/maximages)+1);
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("bild" + i)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("bild" + i)');
	else
		document.poppedLayer = eval('document.layers["bild" + i]');
	document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[i] ;
	
	
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("imgbig")');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("imgbig")');
	else
		document.poppedLayer = eval('document.layers["imgbig"]');
	document.poppedLayer.src = 'index.php?rex_resize=605a__' + images[i] ;
	
	
	
	if (browserType == "gecko")
		document.poppedLayer = 	eval('document.getElementById("bild" + lastid)');
	else if (browserType == "ie")
		document.poppedLayer = eval('document.getElementById("bild" + lastid)');
	else
		document.poppedLayer = eval('document.layers["bild" + lastid]');
	document.poppedLayer.src = 'index.php?rex_resize=125a__' + images[lastid] + '&rex_filter[]=gray&rex_filter[]=brightness&rex_filter[brightness]=67';
	lastid= i;
}