Create your own skin you can at http://dhtmlx.com/docs/products/skinBuilder/index.shtml?mn
Support forum available at http://forum.dhtmlx.com ( if you have a commercial license , there is also a support system at http://support.dhtmlx.com )
All dhtmlx documentation you can find at http://docs.dhtmlx.com
If you have suggestions or questions concerned both documentation and methods behavior, you can write us support@dhtmlx.com.