prince_prince_23:
I have went through webparts already.. a post back is happening when i drag and drop.. it has some more limitations
Have you tried using Update Panel control? If you want to have a webparts without postbacks then you can refer to my article below
http://www.koffeekoder.com/ArticleDetails.aspx?id=340_Creating_Ajax_Enabled_Webparts
Don't forget to click "Mark as Answer" on the post that helped you. That way future readers will know which post fixed your problem.