var _s = false;
	var _d = 0;
	var _iv = null;
	
	function scrollPanel()
	{
		var s = 2;
		if(pan.scrollHeight-s!=pan.scrollTop)
			pan.scrollTop += (_d?1:-1)*s;
		else
			_o(_d);
	}
	
	function _o(d)
	{
		if(_s && _d==d)
		{
			clearInterval(_iv);
			_s = false;
		}
		else
		{
			_iv = setInterval("scrollPanel()", 20);
			_d = d;
			_s = true;
		}
	}