Javascript form

<script type="text/javascript">
function test() {


var getal1 = (document.javascript.huurprijs)
var getal2 = (document.javascript.exin)


var totaal = (eval( getal1 + getal2));


document.getElementById('uitkomst').innerHTML =(totaal);

}
</script>  <script type="text/javascript">
function test() {


var getal1 = (document.javascript.huurprijs)
var getal2 = (document.javascript.exin)


var totaal = (eval( getal1 + getal2));


document.getElementById('uitkomst').innerHTML =(totaal);

}
</script>

 <tr>
<td class='table-tekst'>Huurprijs:</td><td colspan='3' class='table-tekst'>&euro;<input type='text' name='huurprijs' onchange='test()'></td> 
</tr>	

<tr>
<td class='table-tekst'>Gas/water/Elektra:</td><td colspan='3' class='table-tekst'>&euro;<input type='text' name='exin' onchange='test()'>
 <div id="uitkomst">&nbsp;</div>
</td> 
</tr>

<script type="text/javascript">
function test() {
 
 
var getal1 = (document.javascript.huurprijs)
var getal2 = (document.javascript.exin)
 
 
var totaal = (eval( getal1 + getal2));
 
 
document.getElementById('uitkomst').innerHTML =(totaal);
 
}
</script>  <script type="text/javascript">
function test() {
 
 
var getal1 = (document.javascript.huurprijs)
var getal2 = (document.javascript.exin)
 
 
var totaal = (eval( getal1 + getal2));
 
 
document.getElementById('uitkomst').innerHTML =(totaal);
 
}
</script>
 
 <tr>
<td class='table-tekst'>Huurprijs:</td><td colspan='3' class='table-tekst'>&euro;<input type='text' name='huurprijs' onchange='test()'></td> 
</tr>	
 
<tr>
<td class='table-tekst'>Gas/water/Elektra:</td><td colspan='3' class='table-tekst'>&euro;<input type='text' name='exin' onchange='test()'>
 <div id="uitkomst">&nbsp;</div>
</td> 
</tr>