suddenly i saw my blog page element change, my proper element page Attachment 1 my change element Attachment 2 please suggest me how set my previous element
Look here : http://blogging-ideas.blogspot.com/2008/06/reset-widgets-page-elementssymtoms-no.html this can solve the problem, and remember to always, Save your Template before making changes.
I think you have added so many HTML/Javascript sections in you blog, try to remove the recently added one , might you will get your original structure back.