I don't know if it is possible to do this, like I have 2 js files. The first Js File:

 var news_pos,
     about_pos,
     services_pos,
     clients_pos;

    function define_pos(){
               var $top_slides=$('#top_slides'),
                   $mid_nav=$('#mid_nav'),
                   $news_section=$('#section-1');
               var fixed_height = $top_slides.height()+$mid_nav.height();
                news_pos    = fixed_height-20 ;
                   about_pos    = fixed_height+$news_section.height();
                services_pos    = fixed_height+$news_section.height()*2;
                 clients_pos    = fixed_height+$news_section.height()*3;
    }
    $(document).ready(function(){
         var section_news = $('#section-1'),
             section_about = $('#section-2'),
             section_services = $('#section-3'),
             section_clients = $('#section-4');
       setheight();
       function setheight(){
          var section_height=$(window).height()+200;
          $section_news.height(section_height);
          $section_about.height(section_height); 
          $section_services.height(section_height);
          $section_clients.height(section_height);
          define_pos();
       }
});

1. The second JS File:

   $(document).ready(function(){
       var nav = {
                  '$btn1':$('#btn1'),
                  '$btn2':$('#btn2'),
                  '$btn3':$('#btn3'),
                  '$btn4':$('#btn4'),
                  '$btn5':$('#btn5'), myclick : function(){
   
                       myclicked(nav.$btn1,0);
                       myclicked(nav.$btn2,news_pos);
                       myclicked(nav.$btn3,about_pos);
                       myclicked(nav.$btn4,services_pos);
                       myclicked(nav.$btn5,clients_pos);
   
                       function myclicked(j,k){            
                   j.click(function(e) {   
                       e.preventDefault();
                          $('html,body').animate({scrollTop: k}, 1000);
                          });
                       }
                 //Is it right to do return{'myclick':myclick}, how to call? seems not logical
                  }
          }
     nav.myclick(); // Here will not work because it say news_pos is undefined
     //if I use setTimeout(nav.myclick,1000), it will works but I want to run it right the when position is caculated.
     });
   

How do I pass the nav.myclick() function to the frist js file and put it in setheight() and under define_pos()? By the way writing codes right in stackoverflow is strange,press tab not really give you any spacing.