max_thumbs=5;
img_array = new Array(3);
img_nr=1;

function JdB_preloadImages() { 
  var d=document; if(d.images){ if(!d.JdB_p) d.JdB_p=new Array();
    var i,j=d.JdB_p.length,a=JdB_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.JdB_p[j]=new Image; d.JdB_p[j++].src=a[i];}}
}

function JdB_swapImgRestore() {
  var i,x,a=document.JdB_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function JdB_findObj(n, d) { 
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=JdB_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function JdB_swapImage() { 
  var i,j=0,x,a=JdB_swapImage.arguments; document.JdB_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=JdB_findObj(a[i]))!=null){document.JdB_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function buttonToNormal(knop)
{
	el=document.getElementById(knop);
	if (el!=null) el.src = "images/" + knop +".gif";
}
function buttonToOn(knop)
{
	el=document.getElementById(knop);
	if (el!=null) el.src = "images/" + knop +"_f2.gif";
}
function normalButtons()
{
	buttonToNormal("knop1");
	buttonToNormal("knop2");
	buttonToNormal("knop3");
	buttonToNormal("knoptext");
	buttonToNormal("knopwaar");
}
function showImg(img,knop)
{
	document.getElementById("this_foto").src = img;
	document.getElementById("this_foto").style.visibility = "visible";
	document.getElementById("tekst").style.visibility = "hidden";
	normalButtons();
	buttonToOn(knop);
}
function showText()
{
	vis=document.getElementById("tekst").style.visibility;
	if (vis=="visible")
	{
		hideText();
	}
	else
	{
		document.getElementById("this_foto").style.visibility = "hidden";
		document.getElementById("tekst").style.visibility = "visible";
		buttonToOn("knoptext");
		buttonToOn("knopwaar");
	}
}
function hideText()
{
	document.getElementById("this_foto").style.visibility = "visible";
	document.getElementById("tekst").style.visibility = "hidden";
	buttonToNormal("knoptext");
	buttonToNormal("knopwaar");
}


function showFoto(map,img,img2,img3,bijschrift)
{
	img_array[1]=img;
	img_array[2]=img2;
	img_array[3]=img3;
	img_nr=1;
	document.getElementById("this_foto").src = map+img_array[1];
	document.getElementById("bijschrift").innerHTML=bijschrift;
}

function nextFotoTekst(map)
{
	img_nr++;
	if (img_nr>3) img_nr=1;
	if (img_array[img_nr]=="") img_nr=1;
	// alert(map+img_array[img_nr] + " - " + img_nr);
	document.getElementById("this_foto").src = map+img_array[img_nr];
}

function OpenAndScroll(myurl)
{
	// s = document.getElementById('gallerie_container').scrollLeft;
	scrolledAmount = document.getElementById('gallerie_container').contentScroll(0,0,true);
	s=scrolledAmount[0][0];
	myurl+= "&scroll=" + s;
	// alert(myurl);
	window.location.href = myurl;
}

// Veilig emailadres op de site
var m1="mai"; var m2="lto:";
function email( gebruikersnaam, domeinnaam, afbeelden)
{
	if ((afbeelden.length == 0) || (afbeelden.indexOf('@')+1))
		{document.write("<a href=" + m1 + m2 + gebruikersnaam + "@" + domeinnaam + ">" + gebruikersnaam + "@" + domeinnaam + "</a>"); }
	else
		{document.write("<a href=" + m1 + m2+ gebruikersnaam + "@" + domeinnaam + ">" + afbeelden + "</a>"); }
}

function PopupPic(sPicURL)
{
	window.open( "popup.htm?"+sPicURL, "", "resizable=1,HEIGHT=300,WIDTH=300" );
}