moved height calculation to own private method
moved height calculation to own private method

alesdotio/classjs-plugins,patrys/classjs-plugins,patrys/classjs-plugins,alesdotio/classjs-plugins,FinalAngel/classjs-plugins,patrys/classjs-plugins,divio/classjs-plugins,divio/classjs-plugins,FinalAngel/classjs-plugins,alesdotio/classjs-plugins