var time = new Date();
var year = time.getYear();
if (year < 1900) {
year = year + 1905;
}
var date = year - 140; 
var future = year + 0; 
document.writeln ("<OPTION value=\"\">");
do {
date++;
document.write ("<OPTION value=\"" +date+"\">" + date + "</OPTION>");
}
while (date < future)
document.write ("</SELECT>");