The following events are available in dhtmlxToolbar:

• onClick - occurs when the user clicks the left mouse button on Button or Select Button items.
• onStateChange - occurs when the user changes state of Two State Button item;
• onValueChange - occurs when the user changes value of Slider item;
• onXLS (XML Loading Start) - occurs when XML data loading has not started yet; this method is called before onLoadHandler (which is set in loadXML() method);
• onXLE (Xml Loading End) – occurs when XML data was completely loaded into the object; this method is called before onLoadHandler (which is set in loadXML() method);
• onEnter - occurs when the user presses “Enter” button in the Input item.

The user can add any user-defined handler to available events. To do this he can use attachEvent() method with the following parameters:

• evName - name of the event;
• evHandler - user-defined event handler.

    toolbar.attachEvent(evName, evHandler);

Note: the names of the events are case-insensitive.