// JavaScript Document
var mouseOver = 0;
var currElement = document.getElementById('useless');
var prevInput = "";

function change(id) {
	var str = document.getElementById(id).className;
	if (str.search(/ Over/i) != -1) {
		if (mouseOver == 1) {
			str = str.replace(/ Over/i, "");
			mouseOver = 0;
		}
	} else {
		str = str + " Over";
		mouseOver = 1;
	}
	document.getElementById(id).className = str;	
}

function goto(pagina) {
	document.location = pagina;
}

function checkNumeric(id) {
	if (isNaN(this.document.getElementById(id).value)) { this.document.getElementById(id).value = prevInput; }
	else { prevInput = this.document.getElementById(id).value; }
}


// Copyright 2006-2007 javascript-array.com

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
}
// close showed layer
function mclose() {
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}

// go close timer
function mclosetime() {
	closetimer = window.setTimeout(mclose, timeout);
}

// cancel close timer
function mcancelclosetime() {
	if(closetimer) {
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;

var inputNumber = 3;
function addFotoField() {
	if (inputNumber < 12) {
		document.getElementById("fotoContainer").innerHTML += '<input type="file" name="file'+ inputNumber +'" accept="image/jpeg, image/x-png, image/gif" /> <br />';
		inputNumber++;
	} else {
		alert('Er is een maximum ingesteld van 12 foto\'s per project');
	}
}