Nowadays, the web is "2.0", so you can use a drag and drop system, which is more ergonomic for your users.
Check the jquery-ui project ( http://jqueryui.com/ ), there are some example that correspond exactly to your problem. Pierre 2009/6/10 webspee...@gmail.com <webspee...@gmail.com> > > Hey all. > > I'm looking to create a screen where there's a box on the left and a > box on the right. The left box contains names which can be moved to > the box on the right. > > Between the two boxes will be two buttons, one labeled ">>" to move > from left to right and the other labeled "<<" to move from the right > to the left. > > I've seen this many times but need to create one myself. > > At first I was thinking of using selection lists with a size of 20 to > give it height and also set the width. Then, when a selection is > highlighted, the user can click the buttons in the middle to move the > selection from one box to the other. Using a selection list gives me > access to each individual selection and on the click of the button, I > can remove that selection from one list and append it to the other. > > The problem with this approach is that the grayed out scrollbar is > visible. So, I was thinking of using a textarea and that is what > brought me here. Does anyone know of such a tool before I try > reinventing it?