function popMenu(id){
	this.hidden = true;
	this.id = id;

	this.toggle = function(ay){
		var el = document.getElementById(this.id);
		if(this.hidden && el.style.top == '-35px'){
			new Effect.Move(el, {x: 0, y: -ay});
			this.hidden = false;
		}else if(!this.hidden && el.style.top == '-' + (35 + ay) + 'px'){
			new Effect.Move(el, {x: 0, y: ay});
			this.hidden = true;
		}
	}
}