/*
* Cache van javascripts.script.js
* Created: 2010-11-18 14:48:40
*/

/*
$Author: sjors $
$LastChangedDate: 2006-10-19 14:05:31 +0200 (do, 19 okt 2006) $
$Id: javascripts.js 28 2006-10-19 12:05:31Z sjors $
$Rev: 28 $
*/

var google = '';
if (google) {
	var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
	document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
}

window.addEvent('domready',function() {

	$$('body').addClass('js');

	$$('.gallery').each(function (gallery) {
		var grid = {x: 3, y: 4};
		var maxelements = grid.x * grid.y;
		var elmdim = {x: 87, y: 87};
		var gallerylis = gallery.getElements('li');
		var numlis = gallerylis.length - 2; // clearer
		var curgroup = 0;
		var duration = 250;
		if (numlis > maxelements) {
			gallery.setStyles({
				'position': 'relative',
				'height': elmdim.y * grid.y,
				'width': elmdim.x * grid.x,
				'overflow': 'hidden'
			});
			gallerylis.each(function(el, i) {
				el.set('tween', {transition: Fx.Transitions.Bounce.easeOut});
				var top = Math.floor((i%maxelements)/grid.x) * elmdim.y;
				el.store('top', top);
				if (i >= maxelements) {
					top = -1 * elmdim.y
				}
				el.setStyles({
					'position': 'absolute',
					'top': top,
					'left': (i%grid.x) * elmdim.x
				});
			});

			var hideTook = 0;
			function hideGroup() {
				var delay = 0;
				hideTook = 0;
				for (var i = maxelements-1; i >= 0; i--) {
					var idx = curgroup * maxelements + i;
					if (gallerylis[idx]) {
						gallerylis[idx].tween.delay((delay)/2*duration, gallerylis[idx], ['top', elmdim.y * (grid.y + 3)]);
						delay++;
						hideTook++;
					}
				}
			}
			function showGroup() {
				var delay = 0;
				for (var i = maxelements-1; i >= 0; i--) {
					var idx = curgroup * maxelements + i;
					if (gallerylis[idx]) {
						gallerylis[idx].tween.delay((hideTook/2+delay)*duration, gallerylis[idx], ['top', -1 * elmdim.y, gallerylis[idx].retrieve('top')]);
						delay++;
					}
				}
			}
			function showControls() {
				if ((curgroup + 1) * maxelements > numlis) {
					gall_next.setStyle('display', 'none');
				} else {
					gall_next.setStyle('display', 'block');
				}
				if (curgroup == 0) {
					gall_prev.setStyle('display', 'none');
				} else {
					gall_prev.setStyle('display', 'block');
				}
			}

			var gall_prev = new Element('a', {
				'href': '#',
				'class': 'gallery-prev',
				'events': {
					'click': function(e) {
						e.stop();
						hideGroup();
						curgroup--;
						showGroup();
						showControls();
					}
				}
			}).set('html', '<<').inject(gallery, 'after');
			var gall_next = new Element('a', {
				'href': '#',
				'class': 'gallery-next',
				'events': {
					'click': function(e) {
						e.stop();
						var idx;
						hideGroup();
						curgroup++;
						showGroup();
						showControls();
					}
				}
			}).set('html', '>>').inject(gallery, 'after');
			showControls();
		}
	});

});

window.addEvent('load',function() {

	if (google && _gat) {
		var pageTracker = _gat._getTracker(google);
		pageTracker._initData();
		pageTracker._trackPageview();
	}

	new imageZoom($$('img.zoom'));

	document.addEvent('click', function(e) {
  	var el = $(e.target)
  	if (el.tagName.toLowerCase() != 'a') {
  		el = el.getParent('a');
  	}
  	var newwin = false;

		if (el && el.get('href')) {
			newwin = newwin || el.hasClass('newwindow');
			newwin = newwin || el.hasClass('externlink');

			/*if (el.get('href').substring(0, 7) == 'http://' || el.get('href').substring(0, 8) == 'https://') {
				newwin = newwin || el.get('href').indexOf('http://www.kleurgeurensmaakcentrum.nl');
			}*/

			var downloadsurl = '/downloads/';
			newwin = newwin || el.get('href').substring(0, downloadsurl.length) == downloadsurl;
		}
		if (newwin) {
			e.stop();
			window.open(el.href, '_blank');
		}
	});

	if ($('banner')) {
		var images = [];
		$$('.banner-thumbs a').each(function(el, i) {
			images[i] = el.get('href');
		});
		var myImages = new Asset.images(images, {
			onComplete: function() {
				new Element('div', {
					'id': 'banner',
					'class': $('banner').get('class')
				}).replaces($('banner'));
				$('banner').adopt(myImages);

				var bannerScroll = new Fx.Scroll($('banner'), {
					transition: Fx.Transitions.Circ.easeInOut,
					duration: 1000
				});
				$$('.banner-thumbs a').each(function(el, i) {
					el.addEvent('click', function(e) {
						e.stop();
						bannerScroll.toElement(myImages[i]);
					});
				});
			}
		});
	}

	new pngSupport().replace();

});

var mouseOvers = new Class({
	initialize: function(elements) {
		elements = elements || $$('img.mouseover');
		elements.each(function(image) {
			if (image.hasClass('specialmo')) {
				image.set('src_mouseover', image.get('class').replace(/.*mouseover=/, ''));
				image.set('src_mouseout',  image.get('src'));
				image.addEvent('mouseenter', this.mouseover);
				image.addEvent('mouseleave', this.mouseout);
				new Asset.image(image.get('src_mouseover'));
			} else {
				var xsrc = image.src;
				if (xsrc.substring(xsrc.length-7, xsrc.length-3) == '_up.')	{
					image.set('src_mouseover', image.get('src').replace(/_up\.([a-z]{3})/, '_ov.$1'));
					image.set('src_mouseout',  image.get('src'));

					image.addEvent('mouseenter', this.mouseover);
					image.addEvent('mouseleave', this.mouseout);

					// Preload
					new Asset.image(image.get('src_mouseover'));
				}
			}
		}, this);
	},
	mouseover: function() {
		this.set('src', this.get('src_mouseover'));
	},
	mouseout: function()	{
		this.set('src', this.get('src_mouseout'));
	}
});

var pngSupport = new Class({

	Implements: [Options],

	options: {
		transparentImage: '/images/pnghack/transparent.gif'
	},

	initialize: function(options) {
		this.setOptions(options);
		this.needed = Browser.Engine.trident4 && Browser.Platform.win;
	},

	replace: function(parentel) {
		if (!this.needed) return;
		if (!parentel) parentel = document;

		parentel.getElements('img').each(function(img) {
			if (img.src.indexOf(this.options.transparentImage) == -1 && img.src.indexOf("png") >= 0) {
				var oldsrc = img.get('src');
				var size = img.getSize();
				img.set('src', this.options.transparentImage);
				img.set('width', size.x);
				img.set('height', size.y);
				img.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + oldsrc + "',sizingMethod='scale')";
			}
		}, this);
	}
});

var overlayBg = new Class({

	Implements: [Options],

	options: {
		'id': 'bodyoverlay',
		'opacity': 0.8
	},

	initialize: function(options) {

		var windowscroll = window.getScrollSize();
		this.setOptions(options);

		if (!$(this.options.id)) {
			new Element('div', {
				'id': this.options.id,
				'styles': {
					'display': 'none',
					'opacity': 0,
					'width': windowscroll.x+'px',
					'height': windowscroll.y+'px'
				}
			})
				.injectInside(document.body);
		}

		this.fx = new Fx.Tween($(this.options.id), {duration: 1000});
		//$(this.options.id).addEvent('click', this.hide.bindWithEvent(this));
	},

	show: function() {
		var windowscroll = window.getScrollSize();
		$(this.options.id).setStyles({
			'display': 'block',
			'width': windowscroll.x+'px',
			'height': windowscroll.y+'px'
		});
		this.fx.start('opacity', this.options.opacity);
	},

	hide: function() {
		this.fx.start('opacity', 0);
	}
});

var imageZoom = new Class({

	Implements: [Options],

	options: {
		zoomdiv: 'zoomdiv',
		padding: [15, 20, 15, 20],
		textheight: [15, 15]
	},

	buttons: {
		close: null,
		next: null,
		prev: null
	},

	initialize: function(images, options) {
		this.elements = images;
		if (this.elements.length == 0 || !$(this.options.zoomdiv)) {
			return;
		}
		this.setOptions(options);

		this.elements.each(function(thumb, i) {
			var a = thumb.getParent('a');
			a.addEvent('click', this.showImage.bindWithEvent(this, i));
		}, this);

		var windowsize = window.getSize();
		var windowscroll = window.getScroll();

		this.overlay = new overlayBg();

		$(this.options.zoomdiv)
			.setStyles({
				'display': 'block',
				'top': windowscroll.y + (windowsize.y / 2),
				'left': windowscroll.x + (windowsize.x / 2)
			})
			.store('fx',  new Fx.Morph($(this.options.zoomdiv), {duration: 1000, wait: false}))
			.store('fx2', new Fx.Morph($(this.options.zoomdiv), {duration: 1000, wait: false}));

		var me = this;
		this.buttons.close = $(this.options.zoomdiv).getElement('.close');
		this.buttons.next = $(this.options.zoomdiv).getElement('.next');
		this.buttons.prev = $(this.options.zoomdiv).getElement('.previous');

		this.buttons.close.set('href', '#');
		this.buttons.next.set('href', '#');
		this.buttons.prev.set('href', '#');

		this.buttons.close.addEvent('click', function(e) {
			e.stop();
			$(me.options.zoomdiv).retrieve('fx2').start({
				'top': [$(me.options.zoomdiv).getTop(), windowscroll.y + (windowsize.y / 2)],
 				'height': [me.previmgsize.y+'px', 0]
			});
			$(me.options.zoomdiv).retrieve('fx').start.delay(600, $(me.options.zoomdiv).retrieve('fx'), {
				'width': [me.previmgsize.x+'px', 0],
		 		'padding': 0,
		 		'left': [$(me.options.zoomdiv).getLeft(), windowscroll.x + (windowsize.x / 2)]
			});
			me.previmgsize = {x: 0, y: 0};
			me.overlay.hide.delay(1200, me.overlay);
			$(me.options.zoomdiv+'_img').getElement('img').dispose.delay(1200, $(me.options.zoomdiv+'_img').getElement('img'));
			me.buttons.close.setStyle('visibility', 'hidden');
			me.buttons.next.setStyle('visibility', 'hidden');
			me.buttons.prev.setStyle('visibility', 'hidden');
		});
		this.buttons.next.addEvent('click', function(e) {
			e.stop();
			if (me.elements[me.curimg+1]) {
				me.showImage(e, me.curimg+1);
			}
		});
		this.buttons.prev.addEvent('click', function(e) {
			e.stop();
			if (me.elements[me.curimg-1]) {
				me.showImage(e, me.curimg-1);
			}
		});
	},

	showImage: function(e, idx) {
		if (e && e.target) e.stop();

		var windowsize = window.getSize();
		var windowscroll = window.getScroll();

		this.overlay.show();

		if (!this.previmgsize) {
			this.previmgsize = {x: 0, y: 0};
		}

		var removeimg = $(this.options.zoomdiv+'_img').getElement('img');
		if (removeimg) {
			removeimg.setStyle('z-index', 2);
		}

		this.curimg = idx;

		var me = this;
		var images = new Asset.images([this.elements[idx].getParent('a').getProperty('href')], {onComplete: function() {
			var image = images[0];
			image.setStyles({
				'opacity': 0,
				'z-index': 3
			});
			image.injectInside($(me.options.zoomdiv+'_img'));
			new Fx.Tween(image, {onComplete: function(){if(removeimg) {removeimg.dispose()}}}).start('opacity', 1);
			var imgsize = image.getSize();
			imgsize = {x: imgsize.x, y: imgsize.y+me.options.textheight[0]+me.options.textheight[1]};

			var paddingtb = me.options.padding[0] + me.options.padding[2];
			var paddinglr = me.options.padding[1] + me.options.padding[3];

			me.buttons.close.setStyle('visibility', 'visible');
			me.buttons.next.setStyle('visibility',  me.elements[idx+1]?'visible':'hidden');
			me.buttons.prev.setStyle('visibility',  me.elements[idx-1]?'visible':'hidden');
			$(me.options.zoomdiv).getElement('.info').set('html', me.elements[idx].get('alt'));

			var newtop  = windowscroll.y + (windowsize.y - imgsize.y - paddingtb - me.options.textheight[0] - me.options.textheight[1]) / 2;
			var newleft = windowscroll.x + (windowsize.x - imgsize.x - paddinglr) / 2;
			if (newtop  < 0) newtop  = 0;
			if (newleft < 0) newleft = 0;

			$(me.options.zoomdiv).retrieve('fx').start({
				'left': [$(me.options.zoomdiv).getLeft(), newleft],
				'width': [me.previmgsize.x+'px', imgsize.x+'px'],
				'padding-top': [$(me.options.zoomdiv).getStyle('padding-top').toInt(), me.options.padding[0]],
				'padding-right': [$(me.options.zoomdiv).getStyle('padding-right').toInt(), me.options.padding[1]],
				'padding-bottom': [$(me.options.zoomdiv).getStyle('padding-bottom').toInt(), me.options.padding[2]],
				'padding-left': [$(me.options.zoomdiv).getStyle('padding-left').toInt(), me.options.padding[3]]
			});
			$(me.options.zoomdiv).retrieve('fx2').start.delay(800, $(me.options.zoomdiv).retrieve('fx2'), {
				'top': [$(me.options.zoomdiv).getTop(), newtop],
				'height': [me.previmgsize.y+'px', imgsize.y+'px']
			});
			me.previmgsize = imgsize;
		}});
	}
});