Again a small script that enables you to order items in a listbox or (html) optoin. Just include this script in your page:

function move(index,to,list) 

{

    var total = list.options.length-1;

    if (index == -1) return false;

    if (to == +1 && index == total) return false;

    if (to == -1 && index == 0) return false;

    var items = new Array;

    var values = new Array;

    for (i = total; i >= 0; i--) 

    {

        items[i] = list.options[i].text;

        values[i] = list.options[i].value;

    }

    for (i = total; i >= 0; i--) 

    {

        if (index == i) 

        {

            list.options[i + to] = new Option(items[i],values[i], 0, 1);

            list.options[i] = new Option(items[i + to], values[i + to]);

            i--;

        }

        else 

        {

            list.options[i] = new Option(items[i], values[i]);

        }

    }

    list.focus();

}

When you are using asp.Net you can set this script from the code behind like this:

btnUp.Attributes.Add("onclick", "move(" + lstOrder.ClientID + 

".selectedIndex, -1,"+lstOrder.ClientID+")");

btnDown.Attributes.Add("onclick", "move(" + lstOrder.ClientID + 

".selectedIndex,+1," + lstOrder.ClientID + ")");

You can now click on the up and down arrows to move an item in the list.

I had lots of help from this site: http://javascript.internet.com/forms/selection-order.html