hi all..i want to display fax data which choosed from 2 comboboxes.
one is branch and the other one is month.
The problem here i dont know how to bring a branch value when i choose month..
When i choose a month, it not brings a value of branch together..
Here is my codings.

PHP Code:
<?
$month1=$_GET['Month'];
$branch_id=$_GET['branch'];

$queryB = mysql_query("SELECT  * FROM branch WHERE code='$branch_id'");
 $br=mysql_fetch_array($queryB);
$idB= $br['code'];
$nB=$br['name'];
?>

<form name="form1" id="form1" action="faxin2.php" method="get">
<table width="90%" border="0" align="center" cellpadding="0" cellspacing="3" >
  <tr>
    <td><div align="right"></div></td>
    <td>&nbsp;</td>
    <td align="center">Branch:      <select name="branch" onChange="this.form.submit()">
            <option value="">Select Branch</option>
            
            <?
                $sqlst = mysql_query("SELECT * FROM branch ORDER BY name");
                while($branch = mysql_fetch_array($sqlst)){ ?>
                <option  value="<? echo $branch['code'] ?>"><? echo $branch['name'] ?>
                </option>
                <? } ?>
              </select>&nbsp;<input type="text" name="branch_id" value="<? echo $branch_id;?>"><? echo $nB;?>

     <select name="Month" id="Month"  onChange="this.form.submit()">
                <option value="">Select Month</option>             
       <option>January</option>              
                <option>February</option>
                <option>March</option>
                <option>April</option>
                <option>May</option>
                <option>June</option>
                <option>July</option>
                <option>August</option>
                <option>September</option>
                <option>October</option>
                <option>November</option>
                <option>December</option>
              </select>&nbsp;
              <input type="submit" name="Submit" value="Show"></td>
  </tr>
  <tr>
    <td colspan="5">&nbsp;&nbsp;</td>
    
  </tr>
</table>
</form>
Please letme know how to solve this problem..thanks in advance