if (navigator.appVersion.indexOf('3.') == -1) {
var winH = screen.availHeight
if (winH >= 800) {

var space = winH / 20;

document.write('<tr><td width=500 height=' + space + '><img src=spacer.gif width=500 height=' + space + '></td>');
document.write('<td width=31 height=' + space + '><img src=spacer.gif width=31 height=' + space + '></td></tr>');
}
}