var getElementsByClassName = function (className, tag, elm){
	if (document.getElementsByClassName) {
		getElementsByClassName = function (className, tag, elm) {
			elm = elm || document;
			var elements = elm.getElementsByClassName(className),
				nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
				returnElements = [],
				current;
			for(var i=0, il=elements.length; i<il; i+=1){
				current = elements[i];
				if(!nodeName || nodeName.test(current.nodeName)) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	else if (document.evaluate) {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = "",
				xhtmlNamespace = "http://www.w3.org/1999/xhtml",
				namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
				returnElements = [],
				elements,
				node;
			for(var j=0, jl=classes.length; j<jl; j+=1){
				classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
			}
			try	{
				elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
			}
			catch (e) {
				elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
			}
			while ((node = elements.iterateNext())) {
				returnElements.push(node);
			}
			return returnElements;
		};
	}
	else {
		getElementsByClassName = function (className, tag, elm) {
			tag = tag || "*";
			elm = elm || document;
			var classes = className.split(" "),
				classesToCheck = [],
				elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
				current,
				returnElements = [],
				match;
			for(var k=0, kl=classes.length; k<kl; k+=1){
				classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
			}
			for(var l=0, ll=elements.length; l<ll; l+=1){
				current = elements[l];
				match = false;
				for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
					match = classesToCheck[m].test(current.className);
					if (!match) {
						break;
					}
				}
				if (match) {
					returnElements.push(current);
				}
			}
			return returnElements;
		};
	}
	return getElementsByClassName(className, tag, elm);
};

window.onload = function() {

	MM_preloadImages('_layout/arrow.gif','_layout/static_arrow.gif');

	if (typeof(document.getElementById) == 'undefined') {
		document.getElementById = function(id) {
			return document.all[id];
		}
	}
	
	// if (typeof(document.getElementsByClassName) == 'undefined') {
	// 	document.getElementsByClassName = function(tag, elementClass) {
	// 		var elements = document.getElementsByTagName(tag);
	// 		var classElements = new Array();
	// 		for (var i = 0; i< elements.length; i++) {
	// 			if (elements[i].className == elementClass) {
	// 				classElements[classElements.length] = elements[i];
	// 			}
	// 		}
	// 		return classElements;			
	// 	}
	// }
	
	if (document.getElementById('thumbs')) {
		
		var thumbs = getElementsByClassName('thumb', 'img');
		
		for (var i = 0; i< thumbs.length; i++) {
			
			thumbs[i].className = (i == '0') ? 'selected' : 'out';			
			
			addEventHandler(thumbs[i], 'mouseover', true, function () {
				if (this.className != 'selected') {
					this.className = 'over';
				}
			});
			
			addEventHandler(thumbs[i], 'mouseout', true, function () {
				if (this.className != 'selected') {
					this.className = 'out';
				}
			});
			addEventHandler(thumbs[i], 'click', true, function() {
					cleanSelectors();				
					this.className = 'selected';
					var src = this.src.split('/');
					document.getElementById('main_image').src = 'image_' + src[src.length-1].substr(6);
				}
			);
		}
	}
	
};

function addEventHandler(element, eventName, reference, functionName) {

	if (element.addEventListener) {
		element.addEventListener(eventName, functionName, false);
	}
	else if (element.attachEvent && !reference) {
		element.attachEvent('on' + eventName, functionName);
	}
	else {
		eval('element.on' + eventName + ' = ' + functionName);
	}
	
}

function cleanSelectors() {
	if (document.getElementById('thumbs')) {
		var thumbs = getElementsByClassName('selected', 'img');
		for (var i = 0; i < thumbs.length; i++) {
			thumbs[i].className = 'out';
		}
	}
}

function copyit(theField) {
var tempval=eval("document."+theField)
tempval.focus()
tempval.select()
//therange=tempval.createTextRange()
//therange.execCommand("Copy")
}

var photos=new Array()
var photoslink=new Array()
var which=0
photos[0]="_layout/slide_1.gif"
photos[1]="_layout/slide_2.gif"
photos[2]="_layout/slide_3.gif"
photos[3]="_layout/slide_4.gif"

var linkornot=1
photoslink[0]="work/objecten_round&round.php"
photoslink[1]="work/grafiek_round&round.php"
photoslink[2]="work/grafiek_round&round2.php"
photoslink[3]="work/grafiek_round&round6.php"

var preloadedimages=new Array()
for (i=0;i<photos.length;i++){
preloadedimages[i]=new Image()
preloadedimages[i].src=photos[i]
}

function applyeffect(){
if (document.all){
photoslider.filters.revealTrans.Transition=Math.floor(Math.random()*23)
photoslider.filters.revealTrans.stop()
photoslider.filters.revealTrans.apply()
}

}
function playeffect(){
if (document.all)
photoslider.filters.revealTrans.play()
}

function keeptrack(){
}

function backward(){
if (which>0){
which--
applyeffect()
document.images.photoslider.src=photos[which]
playeffect()
keeptrack()
}

}
function forward(){
if (which<photos.length-1){
which++
applyeffect()
document.images.photoslider.src=photos[which]
playeffect()
keeptrack()
}

}
function transport(){
window.location=photoslink[which]
}

//

function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}

//

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

//

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

//

function MM_findObj(n, d) { //v4.01
  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=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

//

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

//

function clearText(thefield){
if (thefield.defaultValue==thefield.value)
thefield.value = ""}

//

function submitonce(theform){
if (document.all||document.getElementById){
for (i=0;i<theform.length;i++){
var tempobj=theform.elements[i]
if(tempobj.type.toLowerCase()=="submit"||tempobj.type.toLowerCase()=="reset")
tempobj.disabled=true
}
}
}
	
//

function hello() { 
document.arrow.src = "http://www.peterwortel.nl/_layout/arrow.gif"; 
}
function goodbye() { 
document.arrow.src = "http://www.peterwortel.nl/_layout/blank.gif"; 
}
function sup_hello() { 
document.arrow.src = "http://www.peterwortel.nl/_layout/arrow.gif"; 
}
function sup_goodbye() { 
document.arrow.src = "http://www.peterwortel.nl/_layout/blank.gif"; 
}
function sub_hello() { 
document.sub_arrow.src = "http://www.peterwortel.nl/_layout/arrow.gif"; 
}
function sub_goodbye() { 
document.sub_arrow.src = "http://www.peterwortel.nl/_layout/blank.gif"; 
}

//

function send() { 
document.fusionmail.action.value = "send"; 
}

function preview() { 
document.fusionmail.action.value = "preview"; 
}

//

function checkAll() {
	for (var i = 0; i < document.searchform.elements.length; i++) {
		if (document.searchform.elements[i].name != "subfield" && document.searchform.elements[i].name != "msgfield") {
			document.searchform.elements[i].checked = true;
		}
	}
}

function uncheckAll() {
	for (var i = 0; i < document.searchform.elements.length; i++) {
		if (document.searchform.elements[i].name != "subfield" && document.searchform.elements[i].name != "msgfield") {
			document.searchform.elements[i].checked = false;
		}
	}
}