function MouseWheel(_id,_l,_e,_p){
	this.id = _id;
	this.obj = document.getElementById(_id);
	this.listener = _l;
	this.event = _e;
	this.prop = _p;
	this.init();
}
MouseWheel.prototype = {
	init:function(){
		this.obj.mywheel = this;
		
		this.obj.onmouseover = function(){
			if(MouseWheel.instance)	MouseWheel.instance.deactivate();
			this.mywheel.activate();
		}
		this.obj.onmouseout = function(){
			this.mywheel.deactivate();
		}
	},
	activate:function(){
		if(this.listener.active)this.listener.active();
		MouseWheel.instance = this;
		if(window.addEventListener){window.addEventListener('DOMMouseScroll',this.wheel,false);}
		window.onmousewheel = document.onmousewheel = this.wheel;
	},
	deactivate:function(){
		if(this.listener.deactive)this.listener.deactive();
		MouseWheel.instance=null;
		if(window.removeEventListener){window.removeEventListener('DOMMouseScroll',this.wheel,false);}
		window.onmousewheel = document.onmousewheel = null;
	},
	handle : function(delta){
		this.listener[this.event](delta,this.prop);
	},
	wheel : function(event){
		var delta = 0;
		if(!event) event = window.event;
		if(event.wheelDelta){
			delta = event.wheelDelta/120;
			if(window.opera)delta = -delta;
		}else if(event.detail){
			delta = -event.detail/3;
		}
		if(/AppleWebKit/.test(navigator.userAgent)){
			delta /= 6;
		}
		delta *= 2;
		if(delta)MouseWheel.instance.handle(delta);
		if(event.preventDefault)event.preventDefault();
		event.returnValue = false;
	}
};

function SWFMouse(_id,_b){
	this.setWheel(_id,_b);
}
SWFMouse.prototype = {
	setWheel:function(_id,_b){
		this.id = _id;
		this.obj = document.getElementById(_id);
		this.parentid = this.obj.parentNode.id;
		this.mw = new MouseWheel(this.parentid,this,"wheel",null);
		if(_b)this.mw.activate();
	},
	wheel:function(delta){
		this.obj.onMouseWheel(delta);
	},
	active:function(){
		this.obj.onRollOver();
	},
	deactive:function(){
		this.obj.onRollOut();
	}
}
var SWFMouses = new Object();
function addSWFMouseListener(_id,_b){
	SWFMouses[_id] = new SWFMouse(_id,_b);
}
function activateSWFMouse(_id){
	if(MouseWheel.instance)MouseWheel.instance.deactivate();
	MouseWheel.instance = SWFMouses[_id].mw;
	MouseWheel.instance.activate();
}
function deactivateSWFMouse(_id){
	MouseWheel.instance.deactivate();
}

// by FRKW
function removeEvent(){
    if(MouseWheel.instance.obj) {
        MouseWheel.instance.obj.onmouseover = null;
        MouseWheel.instance.obj.onmouseout  = null;    
    }
    if(MouseWheel.instance)MouseWheel.instance.deactivate();
}
function resetEvent(_id){
    if(SWFMouses[_id])SWFMouses[_id].setWheel(_id, true);
}