// JavaScript Document

var menu = new Array();

function showMenu(nId, nLevel)
{
	if(nLevel == 0)
	{
		if(menu[2])
		{	
			$(menu[2]).hide();
			menu[2] = '';
		}
		if(menu[1])
		{	
			$(menu[1]).hide();
			menu[1] = '';
		}
		if(menu[0])
		{	
			$(menu[0]).hide();
			menu[0] = '';
		}
		$(nId).show();
		menu[0] = nId;
	}
	else if(nLevel == 1)
	{
		if(menu[2])
		{	
			$(menu[2]).hide();
			menu[2] = '';
		}
		if(menu[1])
		{	
			$(menu[1]).hide();
			menu[1] = '';
		}
		$(nId).show();
		menu[1] = nId;
	}
	else if(nLevel == 2)
	{
		if(menu[2])
		{	
			$(menu[2]).hide();
			menu[2] = '';
		}
		$(nId).show();
		menu[2] = nId;
	}
}

function check_height()
{
	height_left = $('left').clientHeight;
	height_right = $('right').clientHeight;
	
	if(height_left < (height_right + 250))
	{
		$('left').style.height = (height_right + 150)+'px';	
	}
	
}

Event.observe(window,'scroll',function(){
	
	if(document.documentElement.scrollTop > 125)
	{
		move = document.documentElement.scrollTop + 125;
		new Effect.Move('slider', {
			x: 0, 
			y: move,
			mode: 'absolute'
		});
	}
	else
	{
		new Effect.Move('slider', {
			x: 0, 
			y: 225,
			mode: 'absolute'
		});
	}
});

function fade()
{
	fade_old = fade_active;
	fade_active++;	
	if(fade_active > 2)
	{
		fade_active = 1;	
	}
	
	foto_active++;
	
	if(foto_active == foto.length)
	{
		foto_active = 0;	
	}
	
	preload = new Image(); 
	preload.src = foto[foto_active];
	$('sfeer'+fade_active).src = foto[foto_active];
	
	new Effect.Opacity('sfeer'+fade_old,  
	{
		delay: 5,
		duration: 1,
		from: 1, 
		to: 0
	});

	new Effect.Opacity('sfeer'+fade_active,  
	{
		delay: 5.8,
		duration: 1,
		from: 0, 
		to: 1,
		beforeStart: function() { $('sfeer'+fade_active).setOpacity(0); $('sfeer'+fade_active).show(); },
		afterFinish: function() { fade(); }
	});	
}

function clearField(id, text) {
	if($(id).value == text) {
		$(id).value = '';
		$(id).style.fontStyle = 'normal'
	}
}

function loadField(id, text) {
	if($(id).value == '') {
		$(id).style.fontStyle = 'italic'
		$(id).value = text;
	}
}


function page(paginaID) {  
	var url = 'http://www.webkey3.nl/cms3/index.php?menuid=' + paginaID;
	try {
				var parent = window.top.topvenster;
	}
	catch(e) {
	}
	if(parent) {
				window.top.location.href = url;
	}
}

function news(newsID) {  
	var url = 'http://www.webkey3.nl/cms3/archief.php?menuid=' + newsID;
	try {
				var parent = window.top.topvenster;
	}
	catch(e) {
	}
	if(parent) {
				window.top.location.href = url;
	}
}