recharge

Hi, I need help! Accidentaly left my parking light on in the garage (after being upset because some idiot broke into my topbox) and now my CS battery is completely discharged - no lights, nothing. Have read the battery FAQ, but it has not answered my dummy questions... Can I jump start it...

Hi Title says it all really...........Bike is 5yrs old as is battery. Went to start bike after a layoff (2 months) since new baby was born......should have known better really and started up the bike more regularly......but battery is flat Anyways....took battery off bike and fluid levels...