[jQuery] How to customize already existing events?

[jQuery] How to customize already existing events?

Hello,
Let's say I have the folowing code I can't change (it's not mine) :
<select name="myselect"
onchange="this.nextSibling.visibility='hidden';">
    <option value="1">One</option>
    <option value="2">Two</option>
</select>
How can I put my own "change" event handler, but being able to run
the original one as well?
I tried that :
$(document).ready(function() {
    var currentOption = $('select[@name= myselect] > option
[@selected]').attr('value');
    var currentOnChange = $('select[@name=myselect]').attr('onchange');
    currentOnChange = currentOnChange.replace('/this/', '$(\'select
[@name=myselect]\')');
    $('select[@name= myselect]').removeAttr('onchange');
    $('select[@name= myselect]').bind('change', function(event) {
        if (confirm('Are you sure?')) {
            eval(currentOnChange);
        } else {
            $('select[@name= myselect] > option[@selected]').removeAttr
('selected');
            $('select[@name= myselect] > option[@value='+currentOption
+']').attr('selected', 'selected');
        }
    });
});
The eval doesn't seem to do anything. Any idea how to do this?
On a side note, I noticed that I had to use removeAttr() instead of
unbind(), which was not doing anything.
-Nicolas
--
Nicolas "Brush" HOIZEY
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