If simulation is running on page load start == disabled, stop == enabled
If simulation is not running start == enabled, stop == disabled
If simulation is not ready (hasn't started) execute == disabled
Updated button logic to disable stop and execute where simulation is not running and disable start when simulation is already running. Now working with sweet alerts.
If simulation is running on page load start == disabled, stop == enabled If simulation is not running start == enabled, stop == disabled If simulation is not ready (hasn't started) execute == disabled