如何在两列下拉菜单中显示子菜单

<ul class="dropdown-menu1 pull-left twoColumns">
                            <li class="dropdown submenu">
                            <a href="/go.html?url=#" class="dropdown-toggle" data-toggle="dropdown">Welcome Slip<b class="caret1" style="margin-left:98px"></b></a>
                            <ul class="dropdown-menu left33">
                                <li><a href="/go.html?url=#">System Manual - L1</a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">Procedure Manual-L-II </a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">ROR</a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">Key Process Maps</a></li>
                            </ul>
                            </li>
                            <li class="divider"></li>
                           <li><a href="/go.html?url=#">Is HelpDesk</a></li>
                           <li class="divider"></li>
                           <li><a href="/go.html?url=#">Meeting Manager System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Outlook (Email on Intranet) </a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">BPCL(R) Material Movement</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Online Estates Services System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Online Housekeeping System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Electrical Maintenance Services</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Spares Inventory Management </a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">TECTrack - File Tracking System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Action Taken Report </a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Material Codification Request</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Asset Disposal Tracking System</a></li><li class="divider"></li>

                           <li class="dropdown submenu">
                            <a href="/go.html?url=#" class="dropdown-toggle" data-toggle="dropdown">Online Purchase Requisition System<b class="caret1" style="margin-left:98px"></b></a>
                            <ul class="dropdown-menu left33">
                                <li><a href="/go.html?url=#">System Manual - L1</a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">Procedure Manual-L-II </a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">ROR</a></li> <li class="divider"></li>
                                <li><a href="/go.html?url=#">Key Process Maps</a></li>
                            </ul>
                            </li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Contract Monitoring System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">License Tracking System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">CyberDOCS Application</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Scaffolding Material IssueTraker System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Scaffolding Material IssueTraker System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Telephone Directory</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Vehicle Pass Management System</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Access To Honeywell Network Camera</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Access To Network Cameras</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Public Relations Services</a></li><li class="divider"></li>
                           <li><a href="/go.html?url=#">Online Fire & Safety Exam</a></li>
                      </ul>
<ul class="dropdown-menu1 pull-left twoColumns"