// variable for timer
var timer;

function left()
{
	var obj = document.getElementById("lyr");

	obj.style.left = (parseInt(obj.style.left)-1)+"px";

	timer = window.setTimeout("left()", 50);
}

function right()
{
	var obj = document.getElementById("lyr");

	obj.style.left = (parseInt(obj.style.left)+1)+"px";

	timer = window.setTimeout("right()", 50);
}

function stop()
{	
	clearTimeout(timer);
}