用给定的dom元素创建一个toolbar，这个toolbar可能包含icons，buttons和combo boxes

例子

<div id="sidebar">
    <ul style="display: block;">
        <li class="submenu">
            <a href="#"> <i class="icon icon-white icon-inbox"></i>
                <span>基本</span>
                <span class="label">3</span>
            </a>
            <ul id="toolbar-basic">
            </ul>
        </li>
        <li class="submenu">
            <a href="#"> <i class="icon icon-white icon-th-list"></i>
                <span>图形</span>
                <span class="label">3</span>
            </a>
            <ul id="toolbar-shpae">
            </ul>
        </li>
    </ul>
</div>
...
// Creates the div for the toolbar basic
var containerBasic = document.getElementById('toolbar-basic');

var toolbarBasic = new mxToolbar(containerBasic);
toolbarBasic.enabled = false;

new mxDivResizer(containerBasic);

// Creates the div for the toolbar basic
var containerShape = document.getElementById('toolbar-shape');

var toolbarShape = new mxToolbar(containerShape);
toolbarShape.enabled = false;

new mxDivResizer(containerShape);