function Menu(speed, h) {
	var timer = null;
	var ctrl = null;
	var body = null;
	var curr = 0;
	var min = 0;
	var max = 263;

	if(!h) h = 8;
	if(!speed) speed = 5;
	
	var upMenu = function() {
		curr += h;
        if (curr >= max) {
            window.clearInterval(timer);
            timer = null;
			curr = max;
        }
		body.style.height = curr+'px';
    }
    var downMenu = function() {
		curr -= h;
        if (curr <= min) {
            window.clearInterval(timer);
            timer = null;
			curr = min;
        }
		body.style.height = curr+'px';
    }
	
	var expMenu = function(e) {
		if (!e)
            e = window.event;
        var t = e.toElement;
        if (!t) {
            t = e.relatedTarget;
        }
        if (!t)
            return;
		if (timer)
            window.clearInterval(timer);
        timer = window.setInterval(upMenu, speed);
	}
	var collMenu = function(e) {
		if (!e)
            e = window.event;
        var t = e.toElement;
        if (!t) {
            t = e.relatedTarget;
        }
        if (!t)
            return;
		if (t == body || contains(body, t))
            return;	
		if (timer)
            window.clearInterval(timer);
        timer = window.setInterval(downMenu, speed);	
	}

	this.register = function(ctrlDOM, bodyDOM, curr) {
		if(!curr)
			curr = 0;
		ctrl = ctrlDOM;
		body = bodyDOM;
		if(bodyDOM.childNodes[1])
			max = bodyDOM.childNodes[1].offsetHeight;
		else if(bodyDOM.firstChild)
			max = bodyDOM.firstChild.offsetHeight;
		ctrl.onmouseover = expMenu;
		ctrl.onmouseout = collMenu;
		body.onmouseover = expMenu;
		body.onmouseout = collMenu;	
	}
}