	<!--

	if (document.images) {
		var nav_homea = new Image();
		nav_homea.src = "images/nav_home_off.gif";
		var nav_homeb = new Image();
		nav_homeb.src = "images/nav_home_on.gif";
		var nav_abota = new Image();
		nav_abota.src = "images/nav_abot_off.gif";
		var nav_abotb = new Image();
		nav_abotb.src = "images/nav_abot_on.gif";
		var nav_svcsa = new Image();
		nav_svcsa.src = "images/nav_svcs_off.gif";
		var nav_svcsb = new Image();
		nav_svcsb.src = "images/nav_svcs_on.gif";
		var nav_newsa = new Image();
		nav_newsa.src = "images/nav_news_off.gif";
		var nav_newsb = new Image();
		nav_newsb.src = "images/nav_news_on.gif";
		var nav_trana = new Image();
		nav_trana.src = "images/nav_tran_off.gif";
		var nav_tranb = new Image();
		nav_tranb.src = "images/nav_tran_on.gif";
		var nav_empla = new Image();
		nav_empla.src = "images/nav_empl_off.gif";
		var nav_emplb = new Image();
		nav_emplb.src = "images/nav_empl_on.gif";
		var nav_conta = new Image();
		nav_conta.src = "images/nav_cont_off.gif";
		var nav_contb = new Image();
		nav_contb.src = "images/nav_cont_on.gif";
		
	}

          function act(imgName) {
            if (document.images) 
              document[imgName].src = eval(imgName + 'b.src');
          }

          function inact(imgName) {
            if (document.images)
              document[imgName].src = eval(imgName + 'a.src');
          }

          // -->