var myadv=new Array()
myadv[0]='<script type="text/javascript" language="javascript" src="http://www.kqzyfj.com/placeholder-1051925?target=_blank&mouseover=Y"></script>';
myadv[1]='<script type="text/javascript" language="javascript" src="http://www.jdoqocy.com/placeholder-1051935?target=_blank&mouseover=Y"></script>';

var xy=Math.floor(Math.random()*myadv.length);
document.write(myadv[xy]);