function showIt( sURL, iWidth, iHeight, wint, winl ) {

    if (!iWidth) iWidth = 600;
    if (!iHeight) iHeight = 500;


    if (!winl) winl = (screen.width - iWidth) / 2;
    if (!wint) wint = (screen.height - iHeight) / 2;

    if (navigator.appName=="Netscape") {
        winprops = 'height='+iHeight+',width='+iWidth+',top='+wint+',left='+winl+',toolbar=no,' +
        'location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes';
    } else {
        winprops = 'height='+iHeight+',width='+iWidth+',top='+wint+',left='+winl+',toolbar=no,' +
        'location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes';
    }

    
    win = window.open( sURL, 'popup', winprops);
    if (parseInt(navigator.appVersion) >= 4) {win.window.focus();}

}