Envio de variables a una funcion

[El_Sensei_Sherman]

Código HTML:

<select name='rub' id='rub' size=10 multiple='multiple'>
<?php
    while($registro=mysql_fetch_row($consultarub)){
        echo "<option value='".$registro[0]."'".($registro[0]==$rub?"selected='selected'":"").">".ucfirst(strto lower($registro[1]))."</option>";
    }
?>
</select>
 
<script language="javascript">
function borro(xx,xy) {
    alert(xx);
    alert(xy);
}
 
function submit() {
  /*...*/
}
 
document.getElementById('rub').ondblclick = borro;
document.getElemenyById('rub').onchange = submit;
 
</script>