How to change a color or Visible of image in a Gridview

Hi..Community..
I am implement Gridvew  asp.net using C#. In Gridview Their are three Columns in First Colum : gif Image ,Second Column : Name and Third Column: Imagebutton.
I want when click on Image button gif image is visible and the selectedrow color is change  except the other rows ..
please help how to implement this....
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