function popupwin(pageurl, windowname, w, h, scroll, resizable, toolbar, location, directories, status, menubar) {
var winl = (screen.width - w) / 2;
var wint = ((screen.height - h) / 2 - 80);


winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resizable+',toolbar='+toolbar+', location='+location+', directories='+directories+', status='+status+', menubar='+menubar+''
win = window.open(pageurl, windowname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}