// var current = 'home';
  var nav_imgs = new Object();

  function load(img_name) {
    eval('nav_imgs.'+img_name+'_on   = new Image()');
    eval('nav_imgs.'+img_name+'_off  = new Image()');
    eval('nav_imgs.'+img_name+"_on.src   = 'images/nav_'+img_name+'_on.gif'");
    eval('nav_imgs.'+img_name+"_off.src  = 'images/nav_'+img_name+'_off.gif'");
  }

  load('home');
  load('about');
  load('contact');
  load('portfolio');
  load('services');

  function over(img_name) {
    if(img_name) {
      eval('document.images.'+img_name+'.src=nav_imgs.'+img_name+'_on.src');
    }
  }

  function out(img_name) {
    if(img_name) {
      if(img_name != current) {
        eval('document.images.'+img_name+'.src=nav_imgs.'+img_name+'_off.src');
      }
    }
  }

  /* ---- BEGIN POPUP SECTION ----- */

  function pop_staff(name) {
    window.open('staff/'+name+'.html', 'staff_window', 'width=500,height=350,resizable=yes,scrollbars=yes');
  }

  function pop_zoom(file, title) {
    window.open('pop_zoom.zhtml?image='+file+'&title='+escape(title), 'zoom_window', 'width=620,height=420,resizable=yes,scrollbars=yes');
  }