/* -----------------------------------------------------------------
  *
  * type_navigation.js - moved the type navigation
  *
  * -----------------------------------------------------------------
  *
  * Author(s): ugo de vito udevito@apaara.com
  * Copyright (c) 2008 apaaraGROUP
  *
  * -----------------------------------------------------------------
  *
  * Version:  2008-08-13 udv
  *          
  * TODO:    
  *
  * Changes:
  *           2008-08-13 udv init
  *          
  * --------------------------------------------------------------- */

var nav_type_size = 11;
var nav_type_show = 8;

function move_nav_type (move) {

  start = start + move;

  if (start < 1) {
    start = 1;
  } else if(start > nav_type_size - nav_type_show + 1) {
    start = nav_type_size - nav_type_show + 1;
  }

  for (i = 1; i <= nav_type_size; i++) {
    if (i >= start && i < start + nav_type_show) {
      // visibility:visible
      document.getElementById("nav_type_" + i).style.display="inline";
    } else {
      // visibility:hidden
      document.getElementById("nav_type_" + i).style.display="none";
    }
  }

  if (start == 1) {
    document.getElementById("nav_type_prev").src = "media/bola_2_media/layout/icons/list_previous_f.gif";
  } else {
    document.getElementById("nav_type_prev").src = "media/bola_2_media/layout/icons/list_previous.gif";
  }

  if (start == nav_type_size - nav_type_show + 1) {
    document.getElementById("nav_type_next").src = "media/bola_2_media/layout/icons/list_next_f.gif";
  } else {
    document.getElementById("nav_type_next").src = "media/bola_2_media/layout/icons/list_next.gif";
  }

}