/*
 * �������� <��ʼ>
 */

function slideLine(ul, delay, speed, lh) {
	var slideBox = (typeof ul == 'string') ? document.getElementById(ul) : ul;
	var delay = delay || 1000, speed = speed || 20, lh = lh || 20;
	var tid = null, pause = false;
	var start = function() {
		tid = setInterval(slide, speed);
	}
	var slide = function() {
		if (pause)
			return;
		slideBox.scrollTop += 2;
		if (slideBox.scrollTop % lh == 0) {
			clearInterval(tid);
			slideBox.appendChild(slideBox.getElementsByTagName('li')[0]);
			slideBox.scrollTop = 0;
			setTimeout(start, delay);
		}
	}
	slideBox.onmouseover = function() {
		pause = true;
	}
	slideBox.onmouseout = function() {
		pause = false;
	} 
	setTimeout(start, delay);
}
/*
 * �������� <����>
 */