Easy enough, Just use something like this to generate the statements:

--generate disable

SELECT 'exec msdb..sp_update_job @job_name = '''+NAME+''', @enabled = 0' FROM msdb..sysjobs

--generate enable

SELECT 'exec msdb..sp_update_job @job_name = '''+NAME+''', @enabled = 1' FROM msdb..sysjobs

Then schedule SQL jobs from the results at the time you need