/**
 * @name createMarquee
 * @author sundongguo
 * @version 20080911
 */
//--------------------------------------------------[createMarquee]
function createMarquee($target)
{
	function scroll()
	{
		animation.play();
		timer=null;
		setTimer();
	}
	function setTimer()
	{
		if(!timer)timer=setTimeout(scroll,3000);
	}
	function clearTimer()
	{
		if(!timer)return;
		clearTimeout(timer);
		timer=null;
	}
	var aD=$target.getElementsByTagName("div");
	var scrollTopCurrent=0;
	var step=$target.offsetHeight;
	var timer=null;
	var animation=FX.createAnimation
	({
		before:function()
		{
			scrollTopCurrent=$target.scrollTop;
		},
		tween:function(x)
		{
			$target.scrollTop=scrollTopCurrent+step*x;
		},
		after:function()
		{
			if($target.scrollTop==(aD.length-1)*step)$target.scrollTop=0;
		},
		mode:"easeIn",
		duration:300
	});
	$target.scrollTop=0;
	$target.appendChild(aD[0].cloneNode(true));
	EventManager.bind($target,"DOMMouseEnter",clearTimer);
	EventManager.bind($target,"DOMMouseLeave",setTimer);
	setTimer();
};