var ScrollUpNewsObj = new Array();
function qswhMarquee(demoUpNews, demoUpNews1, demoUpNews2)
{
    if(document.getElementById(demoUpNews2).offsetTop-document.getElementById(demoUpNews).scrollTop<=0)
	{
	    document.getElementById(demoUpNews).scrollTop-=document.getElementById(demoUpNews1).offsetHeight
	}
	else
	{
	    document.getElementById(demoUpNews).scrollTop = document.getElementById(demoUpNews).scrollTop +1  //3表示一次移动的象素
	}
}

function ScrollUpNewsMouseOver(demoUpNews, demoUpNews1, demoUpNews2)
{           
    ScrollUpNewsObj[demoUpNews] = setInterval(function(){qswhMarquee(demoUpNews, demoUpNews1, demoUpNews2)},40);
}