<script type="text/javascript">
function onChangeCalendarYear(select) {
var year = select.value;
if(year > 0) {
// You'd really set a form field
alert(year);
}
}
</script>
.....
<td align="center">Calendar Year
<select name="selectYear" id="selectYear" style="width:100px" onchange="javascript:onChangeCalendarYear(this);">
<option value="-1"
> Choose year</option>
<option value="1991">1991</option>
<option value="1992">1992</option>
<option value="1993">1993</option>
<option value="1994">1994</option>
<option value="1995">1995</option>
<option value="1996">1996</option>
<option value="1997">1997</option>
<option value="1998">1998</option>
<option value="1999">1999</option>
<option value="2000">2000</option>
.....