document.write('<select name="in_date" class="input">');
document.write('<option value="2010-08-31" >2010-08-31</option>'); 
document.write('<option value="2010-09-01" >2010-09-01</option>'); 
document.write('<option value="2010-09-02" selected>2010-09-02</option>'); 
document.write('<option value="2010-09-03" >2010-09-03</option>'); 
document.write('<option value="2010-09-04" >2010-09-04</option>'); 
document.write('</select>');