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populate day dropdown on month change

Posted By:      Posted Date: October 07, 2010    Points: 0   Category :ASP.Net
<script type="text/javascript" language="javascript">
function testDate(value)

// var sel = document.forms(0).DDAY;
var sel =document.getElementById('DDAY');

sel.options.length = 0;

var NoOfDays = DaysInMonth(value);

for(var i=1;i<=NoOfDays;i++)
//create new option
var option = new Option(i, "Value" + i);
sel.options(i) = option;


<select onchange="testDate(this.value)" id="MMONTH" style="display: none;
z-index: 101; left: 0px; width: 80px; position: absolute; top: 2px" runat="server">
<option selected="selected" value="01">JAN</option>
<option value="02">FEB</option>
<option value="03">MAR</option>
<option value="04">APR</option>
<option value="05">MAY</option>
<option value="06">JUN</option>
<option value="07">JUL</option>
<option value="08">AUG</option>
<option value="09">SEP</option>
<option value="10">OCT</option&g

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