Required library edition:
Required library file: dhtmlxlayout.js / dhtmlxaccordion.js

attaches dhtmlxMenu to the cell, returns menu object

Attaching to the layout's cell:

    var dhxMenu = dhxLayout.cells("a").attachMenu // returns menu object

Attaching to the accordion's cell:

    var dhxMenu = dhxAcc.cells(id).attachMenu // returns menu object