Q556 Is it possible to transfer an "option" item from dropdownlist A to dropdownlist B?

<script language="JavaScript"><!--
function transferOption(object) {
    var index = object.dropdownlistA.selectedIndex;
    if (index > -1) {
        var newoption = new Option(object.dropdownlistA.options[index].text, object.dropdownlistA.options[index].value, true, true);
        object.dropdownlistB.options[object.dropdownlistB.length] = newoption;
        if (!document.getElementById) history.go(0);
        object.dropdownlistA.options[index] = null;
        object.dropdownlistA.selectedIndex = 0;
    }
}
//--></script>

<form name="formName">

<select name="dropdownlistA">
<option value="Option 0">Entry 0
<option value="Option 1">Entry 1
<option value="Option 2">Entry 2
<option value="Option 3">Entry 3
<option value="Option 4">Entry 4
<option value="Option 5">Entry 5

</select>
<select name="dropdownlistB">
</select>

<p>

<input type="button" value="Transfer"     onClick="if (document.images) transferOption(this.form)">

</form>