<select name="country" size="1">
  <option selected>Nederland <img src="images/vlaggen/nl.gif" /></option>
</select>

<form method="POST" action="">
 
<select name="country" size="1">
  <option selected value="nl">Nederland </option>
  <option value="ned_ant">Nederlandse Antillen </option>
  <option value="suriname">Suriname </option>
  <option value="be">Belgi&euml; </option>
  <option value="aruba">Aruba </option>
  <option value="overige">Overige </option>
</select>
 
</form>
<?php
 
if(isset($_POST['country']))
{
    switch($_POST['country'])
    {
         case "nl":
         $plaatje = "nl.gif";
 
         case "ned_ant":
         $plaatje = "ned_ant.gif";
 
         case "suriname":
         $plaatje = "suriname.gif";
 
         case "be":
         $plaatje = "be.gif";
 
         case "aruba":
         $plaatje = "aruba.gif";
 
         case "overige":
         $plaatje = "overige.gif";
    }
 
    echo $plaatje;
}
 
?>

<script language="javascript">
if (document.images) {
 
image1 = new Image
image2 = new Image
 
image1.src = "http://www.zelda4ever.com/newsite/img/layout/nl.gif"
image2.src = "http://www.zelda4ever.com/newsite/img/layout/en.gif"
 
}
</script>
 
<img alt="image" src="http://www.zelda4ever.com/newsite/img/layout/nl.gif" name="button" width="88" height="31" /><br />
<br />
<form method="POST" action="">
 
<select name="country" size="1">
  <option selected value="nl" onMouseDown="document.button.src=image1.src">Nederland </option>
  <option value="en" onMouseover="document.button.src=image2.src">Engels </option>
</select>
 
</form>