/* 
	j123 -- JavaScript common library
	mail: sebastian.hanula@gmail.com
	www:  http://www.hanula.com/lab/j123

	j123 events library
*/

j123.events = {
	Key : {
		MB_LEFT:  	1,
		MB_RIGHT: 	2,
		KEY_ESC:  	27,
		KEY_RETURN:	13
	},
	__events : false,
	fix : function(e) {
		if (!e) e = window.event;
		if (e.target) {
			if (e.target.nodeType == 3) e.target = e.target.parentNode
		} else if (e.srcElement) {
			e.target = e.srcElement
		}
		if(j123.browser.isIE) e.button = e.button-1;

		return e
	},
	
	add: function(el,type,fn ) {
			if(!this.__events) this.__events = [];
			this.__events.push([el,type,fn]);
			
			if(el.addEventListener) {
				el.addEventListener(type, fn,false);
			} else if(el.attachEvent) {
				if (!el._listeners) el._listeners = new Array();
				if (!el._listeners[type]) el._listeners[type] = new Array();
				
				var applyFunc = function() {
					fn.apply(el, new Array());
				}
				el._listeners[type][fn] = applyFunc;
				el.attachEvent('on' + type, applyFunc);
			}
	},
	
	remove:function(el,type, fn) {
		if(el.removeEventListener) {
			el.removeEventListener(type,fn,false);
		} else if(el.detachEvent) {
			if (el._listeners && el._listeners[type] && el._listeners[type][fn]) {
				el.detachEvent('on' + type, el._listeners[type][fn]);
			}
		}
	},
	unload : function(e) {
		if(j123.events.__events) 
		for(var i=0;i<j123.events.__events;i++)
			j123.events.remove(j123.events.__events[i][0],j123.events.__events[i][1],j123.events.__events[i][2]);
	}
};

j123.events.add(window,'unload',j123.events.unload);