select转移工具箱

select转移工具箱(5)     if(oSelect.multiple)
    {
        for(var selIndex=oSelect.options.length - 1; selIndex>= 0; selIndex--)
        {
            //如果设置了移动到顶端标志
            if(isToBottom)
            {
                if(oSelect.options[selIndex].selected)
                {
                    var transferIndex = selIndex;
                    while(transferIndex < selLength && !oSelect.options[transferIndex + 1].selected)
                    {
                        oSelect.options[transferIndex].swapNode(oSelect.options[transferIndex + 1]);
                        transferIndex ++;
                    }
                }
            }
            //没有设置移动到顶端标志
            else