The html code is as follows. start date
<input readonly type="Text" id="start" name="timestamp" size = "20" value=""> End date
<input readonly type="Text" id="end" name="timestamp1" size = "20" value=""> The problem is that the validation is done only for days but not for the month and year.If you enter the start date as dd/mm/yyyy 12/8/2008 and End date as 11/8/2008 it will give an alert box but if you enter start date as 12/8/2008 and end date as 09/8/2008 than the form is submitted it is not validating. Please anyone can find a solution for this. thanks in advance.