function windowopen(url,windowname,left,top,width,height){
  windowopen_advance(url,windowname,left,top,width,height,0,0,0,0,0,1,0);
}

function windowopen_advance(url,windowname,left,top,width,height,toolbar,location,directories,status,menubar,scrollbars,resizable){
  var win;
win=window.open(url,windowname,'toolbar='+toolbar+',location='+location+',directories='+directories+',status='+status+',menubar='+menubar+',scrollbars='+scrollbars+',resizable='+resizable+',left='+left+',top='+top+',width='+width+',height='+height);
  win.focus();
}