how to add horizontal scrollbar to top of panel in div?

Hi sir,
  Tell me the steps to add horizontal scrollbar to top of panel in div tag. I am using gridview having 25 columns , i got scroll bar at the bottom, my question is how to add horizontal scrollbar at the top of the gridview. I tried the below code, but i did not get the solution, Kindly give me the solution for this problem.

Default.aspx:

Code1:
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Code2:
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