foto te groot in iframe

<iframe align="middle" name="I1" id="ifm" src="<?php echo $dd->img1 ?>" scrolling="no" frameborder="no" width="418px" height="278px"><img src="<?php echo $tekst ?>" width="418px" height="278px" ></iframe>
   <tr><td><hr></td></tr>
   
   <tr>
   <td align="center">
   <?php
    if($dd->img1 == 'images/fotos/'){
        echo "<span style=\"visibility: hidden;\"></span>";
    }else{
?>
   <a href=<?php echo $dd->img1 ?> target="I1"><img src=<?php echo $dd->img1 ?> width="70" height="70"></a>
   <?php 
    }
    if($dd->img2 == 'images/fotos/'){
        echo "<span style=\"visibility: hidden;\"></span>";
    }else{
    ?>
      <a href=<?php echo $dd->img2 ?> target="I1"><img src=<?php echo $dd->img2 ?> width="70" height="70"></a>
      <?php 
    }
    if($dd->img3 == 'images/fotos/'){
        echo "<span style=\"visibility: hidden;\"></span>";
    }else{
    ?>
   <a href=<?php echo $dd->img3 ?> target="I1"><img src=<?php echo $dd->img3 ?> width="70" height="70"></a>
      <?php 
    }
    if($dd->img4 == 'images/fotos/'){
        echo "<span style=\"visibility: hidden;\"></span>";
    }else{
    ?>
   <a href=<?php echo $dd->img4 ?> target="I1"><img src=<?php echo $dd->img4 ?> width="70" height="70"></a>
   <?php
    }
?>
   </td>
   </tr>

<style type="text/css">
<!--
   table.galery { border: none; }
   table.galery td { border: 1px solid black; width: 100px; }
   table.galery img { width: 100px; height: 75px; vertical-align: middle; padding: 1px; margin: 1px; }
   table.galery img.big { width: 418px; height: 278px; }
-->
</style>
<script type="text/javascript">
function ShowImage(Thumb)
{
   var BigImage = document.getElementById('gallery_big');
   BigImage.src = Thumb.src;
}
</script>


<table class="galery">
<tr>
<td colspan="4" rowspan="0">
<img src="<?php echo $dd->img1 ?>" class="big" id="gallery_big" />
</td>


<tr>
<td>
<?php
    if($dd->img1 == 'images/fotos/'){
        echo "<td style=\"visibility: hidden;\"></td>";
    }else{
?>
   <img src="<?php echo $dd->img1 ?>" onmouseover="javascript:ShowImage(this);"/>
   <?php } ?>
</td>
<td>
<?php
    if($dd->img2 == 'images/fotos/'){
        echo "<td style=\"visibility: hidden;\"></td>";
    }else{
    ?>
      <img src="<?php echo $dd->img2 ?>" onmouseover="javascript:ShowImage(this);"/>
         <?php } ?>
</td>
<td>
<?php 
    if($dd->img3 == 'images/fotos/'){
        echo "<td style=\"visibility: hidden;\"></td>";
    }else{
    ?>
   <img src="<?php echo $dd->img3 ?>" onmouseover="javascript:ShowImage(this);"/>
      <?php } ?>
</td>
<td>
 <?php 
    if($dd->img4 == 'images/fotos/'){
        echo "<td style=\"visibility: hidden;\"></td>";
    }else{
    ?>
   <img src="<?php echo $dd->img4 ?>" onmouseover="javascript:ShowImage(this);"/>
   <?php } ?>
</td>
</tr>