echo '
<p align="center"><b><font size="4">Muhtemel Doğum Tarihi Hesaplama</font></b></p>

<form method="POST" action="modules.php?name=hesaplamalar&file=muhtemel_dogum_gunu">


<table border="0" width="100%" id="table1">
    <tr>
        <td width="257">Son Adet Tarihinizin İlk Günü</td>
        <td width="22" align="center">:</td>
        <td width="224">
        <select class="s" style="WIDTH: 50px" name="ilk_gun">
        <option value="00" selected="selected">00</option>
        <option value="01">01</option>
        <option value="02">02</option>
        <option value="03">03</option>
        <option value="04">04</option>
        <option value="05">05</option>
        <option value="06">06</option>
        <option value="07">07</option>
        <option value="08">08</option>
        <option value="09">09</option>
        <option value="10">10</option>
        <option value="11">11</option>
        <option value="12">12</option>
        <option value="13">13</option>
        <option value="14">14</option>
        <option value="15">15</option>
        <option value="16">16</option>
        <option value="17">17</option>
        <option value="18">18</option>
        <option value="19">19</option>
        <option value="20">20</option>
        <option value="21">21</option>
        <option value="22">22</option>
        <option value="23">23</option>
        <option value="24">24</option>
        <option value="25">25</option>
        <option value="26">26</option>
        <option value="27">27</option>
        <option value="28">28</option>
        <option value="29">29</option>
        <option value="30">30</option>
        <option value="31">31</option>
        </select><select class="s" style="WIDTH: 50px" name="ilk_ay">
        <option value="00" selected="selected">00</option>
        <option value="01">01</option>
        <option value="02">02</option>
        <option value="03">03</option>
        <option value="04">04</option>
        <option value="05">05</option>
        <option value="06">06</option>
        <option value="07">07</option>
        <option value="08">08</option>
        <option value="09">09</option>
        <option value="10">10</option>
        <option value="11">11</option>
        <option value="12">12</option>
        </select><select class="s" style="WIDTH: 55px" name="ilk_yil">
        <option value="0000" selected="selected">0000</option>
        <option value="2012">2012</option>
        <option value="2011">2011</option>        
        <option value="2010">2010</option>
        <option value="2009">2009</option>
        <option value="2008">2008</option>
        <option value="2007">2007</option>
        <option value="2006">2006</option>
        <option value="2005">2005</option>
        <option value="2004">2004</option>
        <option value="2003">2003</option>
        <option value="2002">2002</option>
        <option value="2001">2001</option>
        <option value="2000">2000</option>
                </select></td>
        <td>
        &nbsp;</td>
    </tr>
    <tr>
        <td width="257">&nbsp;</td>
        <td width="22" align="center">&nbsp;</td>
        <td width="224"><input type="submit" value="Hesapla" name="B1"></td>
        <td>&nbsp;</td>
    </tr>
</table>

</form>
';

$ilkgun=$_POST["ilk_gun"];
$ilkay=$_POST["ilk_ay"];
$ilkyil=$_POST["ilk_yil"];



if ($ilkgun>=01) {

$ekle['gun'] = 7 ;  
$ekle['ay'] = -3; 
$ekle['yil'] = 1; 

$yeni_tarih = mktime(0,0,0,
    $ilkay+$ekle['ay'],
    $ilkgun+$ekle['gun'],
    $ilkyil+$ekle['yil']);

echo "<font color=\"#FF0000\"><b>Muhtemel Doğum Tarihiniz : </b></font>".date("d / m / Y", $yeni_tarih);  
	}else{

	echo "";
}