function begin() { 
	
var ul = document.getElementById("ulCast"); 

try { 
slideLine(ul, 3000, 3, 20); 
} catch (e) {} 
} 

function slideLine(ul, delay, speed, lh) { 
var slideBox = (typeof ul == "string") ? document.getElementById(ul):ul; 
var delay = delay, speed=speed, lh = lh; 
var tid = null, pause = false; 
var start = function () { 
tid = setInterval(slide, speed); 
} 
var slide = function () { 
if (pause) return; 
var i; 
slideBox.scrollTop += 1; 
if (slideBox.scrollTop % lh == 0) { 
clearInterval(tid); 
for (i = 0; i  < 1; i ++) { 
slideBox.appendChild(slideBox.getElementsByTagName("li")[0]); 
} 
setTimeout(start, delay); 
slideBox.scrollTop = 0; 
} 
} 
slideBox.onmouseover = function () {pause = true;} 
slideBox.onmouseout = function () {pause = false;} 
setTimeout(start, delay); 
}