/* roll overs */
	function hilite(naam)	{
		if (navigator.appName.indexOf("Explorer") != -1){
			document.images[naam].src = 	"images/interface/menu_" + naam + "_on.gif";
			window.status = naam.substr(0,1).toUpperCase() + naam.substr(1);
			return true;
			}
		}
		
	function lolite(naam)	{
	
		if (navigator.appName.indexOf("Explorer") != -1){
			document.images[naam].src = 	"images/interface/menu_" + naam + ".gif";
			window.status = "Ultracarp";
			return true;
			}
		}	

	function setAction(waarde)	{
		document.nieuwsbrief.actie.value = waarde;
		}
		
		
function getStyle( layer ) {
	if( document.getElementById ) {
		return document.getElementById( layer ).style
		} 
	else if( document.all ) {
		return document.all[layer].style
		} 
	else {
		return document[layer]
		}
	}

function writeText( laag,tekst )	{
	if( document.getElementById )	{
		document.getElementById( laag ).innerHTML = tekst;
		}
	else if( document.all )	{
		document.all[laag].innerHTML = tekst;
		}
	else	{
		document[laag].document.open();
		document[laag].document.write( tekst );
		document[laag].document.close();
		}
	}


function showLayer(laag)	{
	getStyle(laag).visibility = "visible";
	getStyle(laag).display = "block";
	getStyle(laag).zIndex = 10;
	}

function hideLayer(laag)	{
	getStyle(laag).visibility = "hidden";
	getStyle(laag).display = "none";
	getStyle(laag).zIndex = 1;
	}


	/* grote fotos tonen in popup */	
	
	function fotovergroten(dir,jpgnaam,breedte,hoogte)	{
		var height, width;
		if (document.all)
		    height = document.body.offsetHeight, width = document.body.offsetWidth;
		else if (document.layers)
		    height = window.innerHeight, width = window.innerWidth;
		
		var y = (height/2)-100, x = (width/2)-220; // default values
		if((!window.grotefotovenster) || (grotefotovenster.closed))	{
			grotefotovenster = window.open("about:blank","fotovenster","width="+  breedte +",height="+ hoogte +",toolbar=0,scrollbars=0,directories=0,status=0,menubar=0,location=0,resizable=0,top=" + y + ",screenY=" + y + ",left=" + x + ",screenX=" + x);
			}
		grotefotovenster.document.location.href = "foto.tpl";	
		setTimeout('update("' + dir + '","' + jpgnaam + '")',500)	
		}


		
	function update(dir,jpgnaam)	{
		grotefotovenster.document.theImage.src = "images/galerij/" + dir + "/groot/" + jpgnaam
		grotefotovenster.document.focus();
		}