Fra if til switch

<script>
function test()
{
name = document.getElementById("name").value;

if(name == 1)
{

document.getElementById("box").innerHTML = "1";

}
else
{

if(name == 2)
{
document.getElementById("box").innerHTML ="2";

}
else
{
if(name == "6690")
{
document.getElementById("box").innerHTML ="6690 - Der bor ejeren af siden!";
}
}
}
}
</script>




<select id="name" onchange="test()">
<option value='' class="opret_felter">V&aelig;lg her</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="6690">6690</option>
</select>

Du valgte postnr: <div id='box'></div>

<?php
$startd = 00;
$slutd = 9999;
echo '<select type="Postnr" name="ditpostnummer" class="opret_felter">';
echo "<option value=\"Vælg postnummer\" class=\"opret_felter\">Vælg</option>";
while ($startd <= $slutd) {
$startd = $startd + 1;
echo "<option value=\"$startd\" class=\"opret_felter\">$startd</option>";
}
echo "</select>";
?>