var banner=new Array()
banner[0]='<a href="http://www.silenttreatment.info/"><img src="http://www.elephantonmain.com/Elements/banner_logo_150.jpg" height="100" width="100" style="float:none; margin:5px;"></a>'
banner[1]='<a href="http://www.getserious.org/"><img src="http://www.elephantonmain.com/Elements/gs_banner_100x100.gif" height="100" width="100" style="float:none; margin:5px;"></a>'

var whichbanner=Math.floor(Math.random()*(banner.length))
document.write(banner[whichbanner])