right click on selectbox

How would I make a right click on a select box get the value of the option
that is under the mouse? I have a multiselect list of user names and want
to be able to right-click on one to edit the information (add an email
address to those that do not have one) for that record without deselecting
the ones that are already selected or selecting the one that is
right-clicked.

Thanks for any help

I should have given more...

This is on a multiple select box which will have more names than are visible
in the box (it will have to be able to scroll). This is also for Internet
Explorer as it will be on a company intranet.

<script language="JavaScript">
function selMe(x){
// determine if it is a right-click
// determine the value of the option under the mouse pointer
// I'll take it from there
}
</script>

<select id=mySel1 size=5 onMouseDown="selMe('mySel');" multiple>
<option value=1>Name 1</option>
<option value=2>Name 2</option>
<option value=3>Name 3</option>
<option value=4>Name 4</option>
<option value=5>Name 5</option>
<option value=6>Name 6</option>
<option value=7>Name 7</option>
<option value=8>Name 8</option>
<option value=9>Name 9</option>
</select>

"Arg" <r_arg (AT) hotmail (DOT) com> wrote

How would I make a right click on a select box get the value of the option
that is under the mouse? I have a multiselect list of user names and want
to be able to right-click on one to edit the information (add an email
address to those that do not have one) for that record without deselecting
the ones that are already selected or selecting the one that is
right-clicked.

Thanks for any help