When i use HTML forms in firefox 6, they dont work, but do in IE and safari and firefox 3.6

echo '          <FORM method="post" action="FindPerGetNo.php">';
echo '          <tr>';
echo '            <SELECT name="SelectionString">';
  	
echo '<OPTION selected value="12">12</option>';
  	
        while($row = mysql_fetch_array($query))
         {
	   echo '<OPTION value=" -'.$row['sTableID'].'-">'.$row['sTableName'].'</OPTION>';
         }
  	echo '	    	    </SELECT> ';									}
  
echo '          </tr>';
  
echo '          <tr> ';
echo '            <p align="left">';
echo '            <td colspan="2"><div align="left"><input type="submit" value="Submit"></div></td>'; 
echo '          </tr> ';
  
echo '          </FORM>'; 

i have the following code in a php script, but in firefox 6 it fails, but works in firefox 3.6, safari, IE ....... <pre><nowiki> echo ' <FORM method="post" action="FindPerGetNo.php">'; echo ' <tr>'; echo ' <SELECT name="SelectionString">'; echo '<OPTION selected value="12">12</option>'; while($row = mysql_fetch_array($query)) { echo '<OPTION value=" -'.$row['sTableID'].'-">'.$row['sTableName'].'</OPTION>'; } echo ' </SELECT> '; } echo ' </tr>'; echo ' <tr> '; echo ' <p align="left">'; echo ' <td colspan="2"><div align="left"><input type="submit" value="Submit"></div></td>'; echo ' </tr> '; echo ' </FORM>'; </nowiki></pre><br /> <br /> the called script has no value for SelectionString in firefox 6, but it does in the other browsers i mentioned