Código HTML:
Ver original<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>";
}
?>
<script language="javascript"> function borro(xx,xy) {
alert(xx);
alert(xy);
}
function submit() {
/*...*/
}
document.getElementById('rub').ondblclick = borro;
document.getElemenyById('rub').onchange = submit;