The popup that belongs to a Bandbox instance.

Developer usually listen to the onOpen event that is sent to Bandbox and then creates proper components as children of this component.

        <bandboxid="bd">        
        <bandpopup>        
                <vbox>                
            <hbox>Search<textbox/></hbox>            
            <listboxwidth="200px"            
            onSelect="bd.value=self.selectedItem.label;bd.closeDropdown();">            
            <listhead>            
                    <listheaderlabel="Name"/>                    
                    <listheaderlabel="Description"/>                    
            </listhead>            
            <listitem>            
                    <listcelllabel="John"/>                    
                    <listcelllabel="CEO"/>                    
            </listitem>            
            <listitem>            
                    <listcelllabel="Joe"/>                    
                    <listcelllabel="Engineer"/>                    
            </listitem>            
            <listitem>            
                    <listcelllabel="Mary"/>                    
                    <listcelllabel="Supervisor"/>                    
            </listitem>            
        </listbox>        
        </vbox>        
        </bandpopup>        
    </bandbox>