I also want to remember my parents E.M.Keerthisena and W.M.Karunawathee who are always with me. At anytime they gave me very kindfull support in all my works. And also my broher Kithsiri was allways with me. Exept those my family members, My uncles also gave me a brilliant backup.

And also My best, best, very best friends from my school times Iresh & Priyankara are unforgettable. I have got many of them. For my computer knowledge Iresh was the one and only reason. And Priyankara gave me an exellent theory knowledge for my school works.

Thanks a lot for all of them.