function openWin(urltoopen) {
   myWin=open(urltoopen, "displayWindow", 
    "width=640,height=500,status=no,scrollbars=yes,resizable=yes,toolbar=no,menubar=no");
}

function openWinSized(urltoopen,ww,hh) {
   myWin=open(urltoopen, "displayWindow", 
    "width="+ww+","+"height="+hh+",status=no,scrollbars=yes,resizable=yes,toolbar=no,menubar=no");
}