<p>How can I move items from one list box control to another listbox control using JavaScript in ASP.NET?</p>

If you're happy to use jQuery, it's very, very simple.
```
```
$('#firstSelect option:selected').appendTo('#secondSelect');
```
```
Where #firstSelect is the ID of the select box.
I've included a working example here:
http://jsbin.com/aluzu
(to edit:
http://jsbin.com/aluzu/edit
)