I need your help

If document.getElementById(file).children[1].style.display = none; hides the Save item in the file menu, then document.getElementById(edit).children[1].style.display = none; does not work properly and does not hide the Add new item in the edit menu item.

<div id=menuwrapper>

    <div id=menu style=width: 1001px; height: 20px>

        <ul>

            <li>

                <a href=#nogo><div id=div_rssims_file>File</div></a>



                <ul id=file>

                    <li><a onclick=window.print()><div id=div_rssims_file_print>Print</div></a></li>

                    <li id=li_rssims_file_save><a onclick=rssims_save()><div id=div_rssims_file_save>Save</div></a></li>

                    <li><a onclick=rssims_save();window.close()><div id=div_rssims_file_save_exit>Save & Exit</div></a></li>

                    <li><a onclick=window.close()><div id=div_rssims_file_exit>Exit</div></a></li>

                </ul>

            </li>



            <li>

                <a href=#nogo><div id=div_rssims_edit>Edit</div></a>



                <ul id=edit>

                    <li><a href=#nogo onclick=rssims_addnew()><div id=div_rssims_edit_addnew>Add new</div></a></li>

                    <li><a href=#nogo onclick=sims_delete()><div id=delete>Delete</div></a></li>

                    <li><a href=#nogo onclick=sims_reset()><div id=clear>Clear Form</div></a></li>

                </ul>

            </li>



            <li>

                <a href=#nogo><div id=div_rssims_view>View</div></a>



                <ul>

                    <li><a href=#nogo><div id=goto_first>&gt;&gt; Go to First</div></a></li>

                    <li><a href=#nogo><div id=goto_next>&gt;Go to Next</div></a></li>

                    <li><a href=#nogo><div id=goto_prev>Go to Previous&gt;</div></a></li>

                    <li><a href=#nogo><div id=goto_last>Go to Last&gt;&gt;</div></a></li>

                </ul>

            </li>



            <li>

                <a href=#nogo><div id=div_rssims_reports>Reports</div></a>



                <ul>

                    <li><a href=#nogo><div id=export_excel>Export to Excel Table</div></a></li>

                    <li><a href=#nogo onclick=sims_compile_htmltable()><div id=export_html>Export to HTML Table</div></a></li>

                    <li><a href=#nogo onclick=sims_compile_htmllist()><div id=export_list>Export to HTML List</div></a></li>

                    <li><a href=#nogo onclick=sims_compile_contactcard()><div id=export_contact>Export as Contact Card</div></a></li>

                </ul>

            </li>



            <li>

                <a style=cursor: pointer; onclick=sims_logoff()><div id=div_rssims_logoff>Logoff</div></a>

            </li>

        </ul>

    </div>

</div>