Ramadan

We have several more days until we finished 2011's Ramadan.And than,we will celebrate Eid ul-Fitr.Yes,Eid may be enjoyable,but think,in the last few days we have in the holy month,Ramadan,we should search for His Grace not too burn out crackers in the night,that for sure disturbing others.Not to mentioned anyone,but we have to take several predicaments about this.Why we must play the crackers?Is that an obligatory in Islam?I think that is not compulsory.So,please make this last days of Ramadan meaningful,as we cannot predict whether we could see Ramadan the next year.