var popurls=new Array()
popurls[0]="http://www.thebrassplayers.co.uk/popup/25-04-08-PopUp.htm"

function openpopup(popurl){
var winpops=window.open(popurl,"","width=500,height=700,toolbar=false,location=no,status=no,scrollbars=false,menubar=false,resizable=no")
}

openpopup(popurls[Math.floor(Math.random()*(popurls.length))])