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

attaches Google Maps to the cell, returns GoogleMaps object

Attaching to the layout's cell:

var GMaps = dhxLayout.cells("b").attachMap(); // returns GoogleMaps object

Attaching to the accordion's cell:

var GMaps = dhxAcc.cells(id).attachMap(); // returns GoogleMaps object

Also you may set your own parameters:

var opts = {
    center: new google.maps.LatLng(40.719837,-73.992348),
    zoom: 11,
    mapTypeId: google.maps.MapTypeId.ROADMAP
    };
var GMaps = dhxAcc.cells(id).attachMap(opts);

If initial params are not specified - the default ones will be used.