Simplifying multiple js files

Simplifying multiple js files

Hello. I am starting to build a new site and I've found a function that works perfectly. The only thing bothering me is right now I have to link a new js file for each function.
  1. <script src="jquery-1.4.1.min.js"></script>
    <script src="first.js"></script>
    <script src="second.js"></script>
    <script src="third.js"></script>



I think I might be able to use an if elseif else statement, but I'm not sure how. Here is a sample of one of the js files:
  1.  $(document).ready(function () {
      var $div1 = $('.page1');
      var $div2 = $('.page2');
      var $div3 = $('.page3');
      var height = $div1.height();
      $div1.hide().css({ height : 0 });
      $('#first a').click(function () {
      if ($div1.is(':visible')) {
     $div1.stop().animate({ height: 0 }, { duration: 1000, complete: function () {
      $div1.hide();
      } });
     } else {
      $div1.stop().show().animate({ height : height }, { duration: 1000 });
      $div2.stop().hide().css({ height : 0 });
      $div3.stop().hide().css({ height : 0 });
      }
     return false;
      });
     });

















And then if the user clicks on the second link it calls:
  1.  $(document).ready(function () {
      var $div1 = $('.page1');
      var $div2 = $('.page2');
      var $div3 = $('.page3');
      var height = $div2.height();
      $div2.hide().css({ height : 0 });
      $('#second a').click(function () {
      if ($div2.is(':visible')) {
     $div2.stop().animate({ height: 0 }, { duration: 1000, complete: function () {
      $div2.hide();
      } });
     } else {
      $div2.stop().show().animate({ height : height }, { duration: 1000 });
      $div1.stop().hide().css({ height : 0 });
      $div3.stop().hide().css({ height : 0 });
      }
     return false;
      });
     });

















and so on and so on for each link the user clicks.
 
To give you a better understanding of it all, here's a link to my test site:
 
Any help to simply my coding would be greatly appreciated.
 
Thanks,
Jeremy