function mymove()
{
	document.getElementById("c1").style.top=document.getElementById("c2").style.top=document.documentElement.scrollTop+10+"px";
//	setTimeout("mymove();",50)
}

document.write("<div id='c2' style='position: absolute;width:100px;top:10px;left:10px;visibility: visible;z-index: 1'><a href='dl-19.asp' target='_blank'><img src='dl-30.jpg' border='0' width='100' height='300' /></a></div>");
document.write("<div id='c1' style='position: absolute;width:100px;top:10px;right:10px;'><a href='dl-19.asp' target='_blank'><img src='dl-30.jpg' border='0' width='100' height='300' /></a></div>");
setInterval("mymove();",50)