var speed=30;
demo2.innerHTML = demo1.innerHTML;

function Marquee()
{
	if( demo2.offsetWidth-demo.scrollLeft<=0 )
	{
		demo.scrollLeft -= demo1.offsetWidth;
	}
	else
	{
		demo.scrollLeft++;
	}
}

var MyMar=setInterval( Marquee , speed );

demo.onmouseover = function(){clearInterval( MyMar );}
demo.onmouseout = function(){MyMar = setInterval( Marquee , speed );}