php or java ajax

I want to open two php files in the same window.

For example first page is of 10 lines and it contain multiple reference(post,http) to another php file. When clicking that link I want the result should display below section on the same page.

From stackoverflow

• Based on your comment, you want something like this:

  [PageA] [PageB] [PageC] [PageD]
  

  Click on PageA

  [PageA] [PageB] [PageC] [PageD]
  Contents of page A
  

  Click on PageB

  [PageA] [PageB] [PageC] [PageD]
  Contents of page B
  

  You can do this with frames, but they are a bit outdated.

  You can use other means of showing this (For example look at this site).

  Peter : sir link a b c d below section if I click a I should see link a b c d a below section if I click b I should see a b c d b

  Gamecat : Ok, you just want to make a kind of menu. (I'll add an example)