// Base event registration object
// by Lost Boys - www.lostboys.nl

var EventListener = {
	listeners:[],
	bSafari:/safari/i.test(navigator.userAgent),
	addEvents:function(els, type, func, scope) {
		for(var i=0; i<els.length; i++) {
			this.addEvent(els[i], type, func, scope);
		}
	},

	addEvent:function(el, type, func, scope) {
		var handler = this.delegate(func, scope || el);
		try {
			el.addEventListener(type, handler, false); 
		} catch (e) { 
			el.attachEvent('on' + type, handler); 
		}

		var event = { element:el, type:type, handler:handler };
		this.listeners.push(event);
		return event;
	},

	removeEvents:function(el, type) {
		var events = el? this.getEvents(el, type) : this.listeners;
		for (var i=0; i<events.length; i++) {
			this.removeEvent(events[i]);
		}
	},

	removeEvent:function(event) {
		try {
			event.element.removeEventListener(event.type, event.handler, false);
		} catch (e) {
			event.element.detachEvent('on' + event.type, event.handler);
		}

		for(var i=0; i<this.listeners.length; i++) {
			if(this.listeners[i] == event) {
				this.listeners.splice(i, 1);
				break;
			}
		}
	},

	getTarget:function(e, nodeName) {
		var target = e.target || e.srcElement;
		
		if(nodeName) {
			// 23/10/16, NS reisplanner
			var reg = new RegExp('^'+nodeName+'$', 'i');
			while(target && !reg.test(target.nodeName)) {
				target = target.parentNode;
			}	return target;
		} else {
			return (target.nodeType > 1)? target.parentNode:target;
		}
	},

	getEvents:function(el, type) {
		var result = [];
		for(var item,i=0; (item = this.listeners[i++]);) {
			if(item.element == el && (!type || type == item.type)) {
				result.push(item);
			}
		}

		return result;
	},

	cancelEvent:function(e) {
		this.preventDefault(e);
		this.stopPropagation(e);		
		return false;
	},
	
	preventDefault:function(e) {
		try {
			e.preventDefault();
		} catch (exception) {
			e.returnValue = false;
		}	
		
		if(this.bSafari) {
			var target = this.getTarget(e);
		 	if (/^a$/i.test(target.nodeName)) {
				target.onclick = function() { return false; };
			}
		}
		return false;
	},
	
	stopPropagation:function(e) {
		try {
			e.stopPropagation();
		} catch (exception) {
			e.cancelBubble = true;
		}
		return false;
	},

	delegate:function(func, scope) {
		return function() {
			func.apply(scope, arguments);
		}
	}
}