/**
 * @fileoverview: 首页‘资费套餐’的定时滚动
 * @author: zhuguoneng
 * @date: 2007-6-18
 */
function $(id){
		return document.getElementById(id);
}
marqueesHeight=135; //滚动一条的高度
stopscroll=false;
ScrollObj = $("lunch");
with(ScrollObj)
{
	style.height=135;
	style.overflowX="visible";
	style.overflowY="hidden";
	noWrap=true;
	onmouseover=new Function("stopscroll=true");
	onmouseout=new Function("stopscroll=false");
}
preTop=0; currentTop=marqueesHeight; stoptime=0;
ScrollObj.appendChild(document.getElementById("lunch-con").cloneNode(true));
function init_srolltext()
{
	ScrollObj.scrollTop=0;
	setInterval("scrollUp()",1);
}
init_srolltext();
function scrollUp()
{
	if(stopscroll==true) return;
	currentTop+=1;
	if(currentTop==marqueesHeight+1)
	{
		stoptime+=1;
		currentTop-=1;
		if(stoptime==1000) //滚动一条的间隔时间
		{
			currentTop=0;
			stoptime=0;  		
		}
	}
	else 
	{  	
		preTop=ScrollObj.scrollTop;
		ScrollObj.scrollTop+=1;
		if(preTop==ScrollObj.scrollTop)
		{
			ScrollObj.scrollTop=marqueesHeight;
			ScrollObj.scrollTop+=1;		
		}
	}
}
init_srolltext();