function scrollNews()
{
document.getElementById('mainNews').style.marginTop = 0 + "px";
startScroll();
}

function startScroll()
{
myMarg = parseInt(document.getElementById('mainNews').style.marginTop);

if(myMarg > -document.getElementById('mainNews').offsetHeight)
	{  
	myMargNew = parseInt(document.getElementById('mainNews').style.marginTop)-1;
	document.getElementById('mainNews').style.marginTop = myMargNew + "px";
	}
	else
	{
	myMargNew = 30;
	document.getElementById('mainNews').style.marginTop = myMargNew + "px";	
	}
	
	myTimer = setTimeout("startScroll()",200);
}


function stopScroll()
{
clearTimeout(myTimer);	
}

window.onload = scrollNews;